Rafael Nadal did it tough against Reilly Opelka on Wednesday, eventually winning his way through to the quarter-finals at the Indian Wells Masters.

Nadal displayed an abundance of tactical nous, nullifying the American’s big hitting and service game to emerge the 7-6(6-3) 7-6(7-5) winner.

Along with a 76 percent first-serve rate, Opelka hit more winners with 26 for the match, but the 35-year-old Spaniard was able to grind out points from the baseline with his trademark heavy topspin. As a result, Nadal’s winner/unforced error differential was +14 in comparison to Opelka’s +1.

"He is one of the toughest opponents on tour," Nadal said post-match. "It is very tough to control his weapons with his serve and forehand.

"I think I played my best match of the tournament so far today. I am very pleased with how I was able to win the match, with two difficult tie-breaks. This victory means a lot to me."

The highest ranked player left in the draw, Nadal will now face Nick Kyrgios, who progressed to the quarter-finals after Jannik Sinner withdrew with illness.

Matteo Berrettini made a shock exit, meanwhile, losing 6-3 6-7(5-7) 6-4 to unseeded Serbian Miomir Kecmanovic.

The Italian world number six was put under constant pressure, with Kecmanovic targeting his backhand and hovered the baseline to close the angles on serve.

The 22-year-old’s only other top 10 victory came against Alexander Zverev, also the world number six then, at Cincinnati in 2019. He will now face Taylor Fritz, who defeated Alex de Minaur 3-6 6-4 7-6(7-5).

Also on Wednesday, Grigor Dimitrov edged past John Isner 6-3 7-6(8-6). In his unique style, the Bulgarian 33rd seed came up with the shot of the day, flicking a forehand pass across the visibly stunned Isner.

He will face Andrey Rublev, who defeated Hurbert Hurkacz 7-6(7-5) 6-4. In Wednesday’s other results, Carlos Alcaraz Garfia comfortably defeated Gael Monfils 7-5 6-1, while Cameron Norrie accounted for Jenson Brooksby 6-2 6-4.

Former world number one Simona Halep emphatically dispatched unseeded Petra Matric 6-1 6-1 in Wednesday's quarter-final at the Indian Wells Open.

Halep landed 75 per cent of her first-serves and won those points at a rate of 82 per cent (27/33).

Martic's serve commanded much less respect, as she landed 69 per cent of her first-serves, but only won 36 per cent of those points (8/22).

After holding in her first service game, Martic allowed Halep to rattle off six consecutive games, with three double-faults assisting her Romanian opponent.

With the win, Halep booked a semi-final matchup against Poland's number three seed Iga Swiatek after she prevailed in her meeting with American Madison Keys in similar fashion.

Paula Badosa went a step closer to defending her Indian Wells Open title as she ended Leylah Fernandez's run to reach the quarter-finals.

Badosa was calm under pressure against last year's US Open runner-up, saving five out of the six breakpoints she offered up in a 6-4 6-4 success.

Matters were less routine for third seed Iga Swiatek, who held her nerve to come back from a set down against three-time major champion Angelique Kerber.

Breakpoints were contested in six of the match's first eight games and Kerber made the big points count, but Swiatek went on to triumph 4-6 6-2 6-3.

Swiatek, 20, showed grit beyond her years as she broke Kerber's serve four times in the second set, cleaning up her first-serve percentage while the German was only able to win 31 per cent of her successful first-serves (4-13).

Both women hit over 70 per cent of their first-serves in the final set, with the difference coming down to the return game, where Swiatek won half of her return points (12-24), with Kerber struggling (5-22).

Swiatek will face American Madison Keys, who defeated Harriet Dart in a brisk 69 minutes, while Badosa goes up against Veronika Kudermetova, who overcame Naomi Osaka in contentious circumstances earlier in the tournament.

Rafael Nadal sympathises with Naomi Osaka over the abuse she was subjected to at Indian Wells, but says athletes must be prepared to deal with it "as nothing is perfect in life".

Osaka was reduced to tears as she crashed out of the Indian Wells Open with a 6-0 6-4 third-round defeat to 21st seed Veronika Kudermetova on Saturday.

A member of the crowd could be heard shouting "Naomi, you suck" after the four-time grand slam champion had been broken in the first game of the match.

Osaka approached the chair umpire to report the incident and held further discussions with the court supervisor after being insulted again.

While accepting there is no place for such conduct, 21-time grand slam winner Nadal believes players should learn to cope with hostile environments.

"These kind of questions are tough to answer because, in some way, the easy answer for me is I feel terrible about what happened, that never should happen," he told reporters.

"The real thing, in the real world, that happens, you know? I feel very sorry for her. We are having, in my opinion, a great life. 

"We are very lucky people that we're able to enjoy amazing experiences because of our life, because we are tennis players. We make money.

"Even if is terrible to hear from that, we must be prepared for that. We need to resist these kind of issues that can happen when you are exposed to people. 

"At the same time, as we like a lot when the people are supporting, when something like this happens, we need to accept and move forward.

"I understand that probably Naomi, she suffered a lot with his probably kind of issues that she has, mental [health] issues. 

"The only thing that I wish for her is to recover well from that and wish her all the very best. But nothing is perfect in this life. We need to be ready for adversities."

Speaking shortly after the incident, an emotional Osaka said being targeted by the spectator reminded her of abuse the Williams sisters were subjected to at the same event.

Serena and Venus Williams were the victims of verbal abuse at the tournament in the Californian desert back in 2001.

The siblings' father, Richard Williams, claimed he had been racially abused at Indian Wells, while Venus Williams said she "heard whatever he heard".

Daniil Medvedev, who will concede his status as world number one back to Novak Djokovic from next week, said he can relate to how Osaka felt after recently hitting out at the "disrespectful" crowd at the Australian Open.

"I didn't see it with my own eyes, and I didn't watch the videos after, so I just heard it from someone who heard from someone, so I don't want to go too much into it," he said.

"It's tough for everybody because I can feel for Naomi. I mean, I felt not great in Australia. 

"You know they're [the players] getting millions. They should be ready for everything. At the same time, we're humans. We all make mistakes, good decisions. 

"Sometimes we feel bad. Sometimes we feel good. I can understand that Naomi didn't feel that great when she heard it and I can completely understand her feelings.

"Life would be easier if everybody would be calm and not angry but, even talking about me, I get angry, so I should be better also."

Novak Djokovic will return to the top of the ATP rankings after Daniil Medvedev fell to a brilliant Gael Monfils comeback at the Indian Wells Open.

Medvedev was beaten 4-6 6-3 6-1 by Frenchman Monfils, with the reigning US Open champion only able to connect on 50 per cent of his first serves, while he was broken three times in the decider.

For Monfils, the win earns him a spot in the fourth round against Carlos Alcaraz, while the loss means Medvedev will lose his position as world number one after only two weeks.

Speaking to post-match media, Medvedev said while he will work hard to earn the top-ranking back, starting in Miami next week.

"Is it better to be number one for, let’s say one week in your life, or never touch it?" he said. "I think it's still better to at least touch it.

"Now I know I'm going to lose it, so I have Miami to try to get it back. [I'm] usually feeling a little bit better in Miami in terms of tennis, so I'll try to play good there.

"I thought it could give me more motivation, well, I had motivation. It's just that I didn't find my best tennis."

World number five Anett Kontaveit slipped out of the Indian Wells Open after a 3-6 7-5 7-6 (7-5)  loss to Marketa Vondrousova.

Kontaveit was the second-highest seed remaining in the tournament entering Monday's play, and appeared to be on her way through to the fourth round after breaking twice in the opening set.

Yet Vondrousova got the better of her Polish opponent in a topsy turvy second set, forcing a decider that starter in frantic fashion, with a concession of serve in each of the opening five games.

Vondrousova held to end that street yet was pulled back to 4-4 by a resurgent Kontaveit, though the Czech world number 33 eventually closed the match out at the fourth time of asking in the tie-break to tee up a clash with Veronika Kudermetova.

Emma Raducanu knows she must "get stronger" after losing to Petra Martic in the third round of the Indian Wells Open.

Martic came from a set down to beat US Open champion Raducanu 6-7 (3-7) 6-4 7-5 on Sunday.

Teenager Raducanu has been troubled by a back injury and an issue with her hip.

The Brit says she was hampered at Indian Wells, but is confident she will be fit for the Miami Open next week.

"I think it's just part of not playing and having so much stop start and having five, six days to prepare for matches and then playing at that intensity,” she said.

"It was a tough one not being able to serve full out so I was having to work so hard just to hold.

"I've just got to get stronger. I've had it for the last few days, just a product of training hard and probably the last match was pretty intense too and it didn't settle down.

"When you are crossing your fingers to hold serve every time, it's tough. I couldn't really drive up and I was kind of struggling to turn and reach.

"The margins were so small. I should be good for Miami, for sure."

Andy Murray has expressed his sympathy for Naomi Osaka over the abuse she was subjected to at Indian Wells but says athletes must deal with it.

Osaka was reduced to tears as she crashed out of the Indian Wells Open with a 6-0 6-4 third-round defeat to 21st seed Veronika Kudermetova on Saturday.

A member of the crowd could be heard shouting "Naomi, you suck" after the four-time grand slam champion had been broken in the first game of the match.

Osaka approached the chair umpire to report the incident and held further discussions with the court supervisor after being insulted again.

Murray says there is no place for such conduct, but believes players must be able to ignore it.

He said: “It's a difficult one. I've often thought watching certain sports, I wouldn't say I've often seen it loads in tennis … but if I watch a football or a soccer match and a player's going to take throw-in or a corner kick and the crowd are just hurling insults at those individuals.

"I always think, how is that allowed? Like, you can't do that. If you're doing that to someone when you're walking down the street or in any other sort of work environment, that's obviously not tolerated.

"I've played in certain atmospheres as well myself in tennis, like Davis Cup atmospheres, away from home, especially where the atmosphere's intense, and sometimes things are said and it's not that comfortable.

"The people that come to watch, you want them to be there and supporting the players and not making it more difficult for them. I don't know, but it's also something that's always just kind of been part of sports as well."

He added: "If you go and watch a basketball match, for example, and a player's taking free throws, I would say like almost every basketball match I've been to one of the players has been heckled by the crowd as well

"While it's wrong for those individuals to be doing it, the athletes obviously have to kind of be used to that as well or be able to deal with that too, even though it's not pleasant.

"I feel for Naomi, that obviously it upset her a lot, but it’s always been something that's been part of sport, I guess, as well.

"You have to be prepared for that in some ways and be able to tolerate it because it does happen regularly across all sports."

Third seed Alexander Zverev has been knocked out of the Indian Wells Masters by Tommy Paul in his first game since his expulsion from last month's Mexican Open for unsportsmanlike conduct.

Unseeded American Paul triumphed over the German 6-2 4-6 7-6 (7-2) in two hours and 17 minutes, rallying back from a break down in the final set.

Paul hit less winners, 26-21 to Zverev but made less unforced errors 25-19, while his serve and volley game was a key feature.

"I played a really high level today," Paul said during his on-court post-game interview. "The last time I played him, I played well, I put pressure on him so I knew how i wanted to play so I came out and executed him well.

"I played well when it came down to the breaker, so I'm pretty happy with my performance."

Zverev had not played since being expelled in Acapulco after a stunning outburst where he struck his racquet on the umpire chair several times after a doubles defeat.

Ninth seed Felix Auger-Aliassime was a major casualty, going down to Dutchman Botic van de Zandschulp 7-6 (7-4) 6-7 (4-7) 6-3 in three hours and 15 minutes.

The Canadian had 36-27 winners but was let down by 43-26 unforced errors, along with converting only two of his 10 break points.

Van de Zandschulp had failed to take three match points in the second set but showed composure to finish the job in the third.

Wild card Andy Murray was also eliminated in the second round, blowing three set points in the first set before going down to 31st seed Alexander Bublik 7-6 (11-9) 6-3 in two hours and one minute.

Last year's Wimbledon runner-up and Italian sixth seed Matteo Berrettini needed more than two hours to get past world number 86 Holger Rune 6-3 4-6 6-4.

Seventh seed Andrey Rublev defeated Dominik Koepfer 7-5 6-4 to extend his win streak to 10 matches, while 11th seed Hubert Hurkacz beat Oscar Otte 6-3 3-6 6-3.

Other seeds to be eliminated were 22nd seed Aslan Karatsev who went down 7-6 (7-5) 6-4 to American Steve Johnson, while 24th seed Marin Cilic lost 6-7 (7-9) 6-3 7-6 (8-6) to Miomir Kecmanovic.

Two-time major winner Simona Halep secured a spot in the Indian Wells Open last 16 with a strong 6-3 6-4 victory over 16th seed Cori Gauff on Sunday.

Halep, who is aiming to rebuild her ranking in 2022 after an injury-hit second half of last year, was excellent with her return, particularly on Gauff's second serve to gain the edge.

The Romanian saved all four break points generated by Gauff, while she converted three of the nine break points that she created.

Halep, who started the year with victory at the Melbourne Summer Set 1 before a last-16 loss to Alize Cornet at the Australian Open, needed only one hour and 16 minutes to seal her progress.

She will next play Romanian compatriot Sorana Cirstea after the 26th seed won 5-7 6-1 6-0 against lucky loser Anna Kalinskaya.

Last year's US Open champion and British 11th seed Emma Raducanu was bundled out by Croatian world number 79 Petra Martic 6-7 (3-7) 6-4 7-5.

Raducanu had served for the match in the final set but the Croatian won the final three games. Martic triumphed in two hours and 46 minutes, reaching the last 16 at Indian Wells for the second time in her career.

Martic will face 28th seed Liudmila Samsonova who triumphed 6-4 7-6 (7-4) over Danka Kovinic.

Third seed Iga Swiatek came from a set down to win 6-7 (3-7) 6-2 6-1 over Clara Tauson in two hours and 18 minutes.

Swiatek has won seven straight matches and is unbeaten at WTA 1000 events this season, having triumphed in Doha last month.

The Pole will take on three-time major winner Angelique Kerber in the last 16 after the German won comfortably over Daria Kasatkina 6-2 6-1.

American 25th seed Madison Keys got past countrywoman Alison Riske 7-6 (7-4) 6-1, setting up a fourth-round meeting with British qualifier Harriet Dart who beat Kaia Kanepi in straight sets.

An emotional Naomi Osaka says being targeted by a heckling spectator during her loss to Veronika Kudermetova reminded of abuse the Williams sisters were subjected to at the Indian Wells Open.

Osaka was reduced to tears as she crashed out with a 6-0 6-4 third-round defeat to 21st seed Veronika Kudermetova at Indian Wells on Saturday.

A member of the crowd could be heard shouting "Naomi, you suck" after the four-time grand slam champion had been broken in the first game of the match.

Osaka approached the chair umpire to report the incident and held further discussions with the court supervisor after being insulted again.

Serena and Venus Williams were subjected to verbal abuse at the prestigious tournament in the Californian desert back in 2001.

The legendary siblings' father, Richard Williams, claimed he had been racially abused at Indian Wells, while Venus Williams said she "heard whatever he heard".

Former world number one Osaka said while trying to hold back the tears after her exit: "I've been heckled before and it didn't really bother me.

"But being heckled here... I've watched videos of Venus and Serena get heckled here and if you've never watched it, you should watch it.

"I don't know why, but it went into my head and got replayed a lot. I just want to say thank you and congratulations [to Kudermetova]." 

Serena Williams boycotted the competition for 14 years before making her Indian Wells return in 2015.

Stefanos Tsitsipas survived a big scare in his "crazy battle" with Jack Sock to reach the third round of the Indian Wells Masters.

The fifth seed was taken all the way to a third-set tie-break by Sock, which he trailed 5-3 before recovering to claim a 7-6 (7-5) 3-6 7-6 (7-5) victory in a gripping contest.

Sock, ranked 140 places below his opponent, put his strong forehand to good use to hold in a first set that went the distance but was undone by some unforced errors.

After responding brilliantly by taking the second set, after once again holding his serve, the American looked to be heading for defeat when 40-0 down at 5-6 in the third set.

However, he dug deep to force another tie-break and was within two points of a big victory, only for two more unforced errors to cost him a place in the last 32.

"It was a crazy battle; we both left everything out there," Tsitsipas said. "Jack played incredibly well at times but I was able to bring out the best in my game at the end. 

"I proved I could play aggressive tennis and stay calm at the same time."

Tsitsipas will now face another home hopeful in Jenson Brooksby, who saw off Karen Khachanov 6-0 6-3 earlier in the day.

Jannik Sinner battled to a 6-3 6-3 win over Laslo Djere elsewhere in Saturday's action, while Denis Shapovalov and defending champion Cameron Norrie also advanced.

Fabio Fognini withdrew from his meeting with Nikoloz Basilashvili, who now awaits Norrie in the next round.

Naomi Osaka was brought to tears by a heckling spectator during her Indian Wells Open match with Veronika Kudermetova before going on to lose 6-0 6-4.

The incident happened after Osaka had been broken by Kudermetova in the first game, with someone in attendance reported to have yelled "Naomi, you suck".

Four-time grand slam winner Osaka, competing in her first tournament since January's shock early Australian Open exit, appeared to ask the chair umpire to take action.

Osaka initially put that unneeded distraction behind her by taking the next point, but she wasted two break opportunities and Kudermetova successfully held to move 2-0 ahead.

The 24-year-old was in tears as she prepared to serve her next game and held further discussions with the court supervisor after going 3-0 down.

She could not recover and, after losing the first set 6-0, Osaka suffered the only break of serve in the seventh game of the second set to lose the contest fairly resoundingly. 

Kudermetova will now face Marie Bouzkova for a place in the last 16 after the Czech recovered to see off home hopeful Jessica Pegula 5-7 6-2 6-0.

Two-time champion Victoria Azarenka also made it through on Saturday with a 6-3 7-5 victory over lucky loser Astra Sharma, setting up a meeting with Elena Rybakina.

Leyla Fernandez saved four match points against Amanda Anisimova in a dramatic match that came to an end when the American retired through illness.

After losing the opener 6-2, Fernandez took the second set to a tie-break but felt unable to continue. Anisimova will meet Shelby Rogers in a rematch of last year's last-16 encounter.

Rafael Nadal offered his sympathy to Sebastian Korda after scraping past the 21-year-old, who considers his Indian Wells Masters opponent "my biggest idol".

Korda had trained with Nadal earlier this week before the draw paired the two together – an eagerly awaited encounter for the younger man.

Korda is such a big Nadal fan his cat is named after the Spaniard, but he caused some concern for the 21-time major champion and his other supporters on Saturday.

Having talked up the meeting, it looked as though the occasion might get the better of Korda as he quickly fell 4-0 down in the opener.

Nadal had not dropped a set since victory at the Australian Open – one of three tournaments he has entered this year and three tournaments he has won.

But that perfect 15-0 record suddenly came under threat in the second set, as Korda sought to prolong his dream match-up and stunned his hero 6-1.

Suddenly, Nadal was forced to face down one of his biggest fans in a decider and initially struggled badly, falling two breaks down, with Korda serving for the match at 5-2.

This time the nerves did get to Korda, who lost four games in a row before stopping the rot to reach a tie-break.

There, Korda did briefly hold a mini-break lead, but that was only as part of a sequence of five consecutive mini-breaks that took the match away from him, Nadal prevailing 6-2 1-6 7-6 (7-3).

"I feel very, very lucky today to be through, honestly," Nadal said afterwards.

Korda could at least enjoy his consolation prize: compliments from Nadal, who had won their only prior meeting en route to his 2020 French Open title.

"Sebastian was playing some fantastic tennis and I'm sorry for him," Nadal said. "He had chances, but that's tennis.

"He's very young, he has an amazing future. I wish him all the best."

Up next for Nadal is Dan Evans, whose compatriot Cameron Norrie – the defending Indian Wells champion – also advanced with a straight-sets win over Pedro Martinez.

Newly-minted world number one Daniil Medvedev said his win was "not as easy" as it appeared after beating Tomas Machac in straight sets at the Indian Wells Masters.

Medvedev beat his Czech opponent 6-3 6-2 in their second round match, his first since being told he cannot compete under the Russian flag following the invasion of Ukraine.

After saving a break point in the opening game, Medvedev settled quickly, breaking-to-love to go up 4-2 and securing the first set without conceding a point in his final two service games.

The 26-year-old effectively put the contest to bed when he broke Machac's serve in the opening game of the second set, later securing the double-break to sail to the finish line.

Speaking to the post-match media, Medvedev said it was far from a perfect performance, but was glad to come through unscathed.

"I think I was pretty consistent," he said. "If you look at the first set, it was pretty even. He made a few unforced errors and maybe some bad decisions in the crucial moments – that's how tennis is sometimes.

"The scoreline might be pretty effective, 6-3 6-2, but if you look at the points and the games, it was not as easy as it seems.