Elina Svitolina will refuse to play Russian or Belarusian players unless tennis' governing bodies have them compete as neutral athletes in the wake of Russia's invasion of Ukraine.

The world number 15, who has committed to donating all of her prize money to Ukrainian military and humanitarian efforts, has been drawn against Russia's Anastasia Potapova in the first round of the Monterrey Open.

In a post on Twitter, Svitolina announced she would not contest that match or any other against players from Russia or Belarus unless the ATP, WTA and ITF follow the recommendation of the International Olympic Committee (IOC) and remove any reference to their national identities.

Russian president Vladimir Putin ordered an invasion of Ukraine last Thursday, with neighbouring Belarus effectively used as a staging post for Russian military.

Svitolina wrote: "I believe the current situation requires a clear position from our organisations: ATP, WTA and ITF. As such, we – Ukrainian players – requested to ATP, WTA and ITF to follow the recommendations of the IOC to accept Russian or Belarusian nationals only as neutral athletes, without displaying any national symbols, colours, flags or anthems.

"Accordingly, I want to announce that I will not play tomorrow [Tuesday] in Monterrey, nor any other match against Russian or Belarusian tennis players until our organisations take this necessary decision."

Svitolina saluted the likes of Daniil Medvedev, Andrey Rublev and Anastasia Pavlyuchenkova, Russian players who have all spoken out against the war.

She added: "I do not blame any of the Russian athletes. They are not responsible for the invasion of our motherland.

"Moreover, I wish to pay tribute to all the players, especially Russians and Belarusians, who bravely stated their position against the war. Their support is essential."

Alize Cornet crashed out on home soil as the Lyon Open got under way on Monday.

Fourth seed Cornet went down to a surprise defeat against Spanish qualifier Cristina Bucsa to disappoint the French support.

Bucsa, the world number 139, broke serve on six occasions as she came from behind to triumph 1-6 6-4 6-1 and dispatch Cornet, who was the highest-seeded player taking to the court on day one.

Fifth seed Jasmine Paolini almost joined Cornet in suffering an early exit at the WTA 250 event.

However, the Italian rallied to defeat Irina Bara 4-6 7-5 6-3 in a battle lasting two hours and 25 minutes.

Elsewhere, six aces helped Varvara Gracheva edge past Kristina Kucova in a 7-6 (7-0) 7-6 (7-2) win.

Paolini's compatriot Camila Giorgi is the number one seed at the tournament.

Giorgi is due to start her campaign on Tuesday after being handed a standout draw against home favourite Caroline Garcia.

Athletes and officials from Russia and Belarus should be prevented from taking part in all international sporting competitions, the International Olympic Committee said.

In a statement issued on Monday, the IOC's executive board accused the governments of Russia and Belarus of a "breach of the Olympic Truce" following the attack on Ukraine.

Russian president Vladimir Putin ordered an invasion of Ukraine last Thursday, with neighbouring Belarus effectively used as a staging post for Russian military.

The IOC accepted athletes from both countries did not deserve to be punished simply for the actions of their governments. However, because the war in Ukraine prevents many Ukrainians from taking part in sporting events, the IOC said they were left with "a dilemma which cannot be solved".

It added: "The IOC EB has therefore today carefully considered the situation and, with a heavy heart, issued the following resolution:

"In order to protect the integrity of global sports competitions and for the safety of all the participants, the IOC EB recommends that International Sports Federations and sports event organisers not invite or allow the participation of Russian and Belarusian athletes and officials in international competitions.

"Wherever this is not possible on short notice for organisational or legal reasons, the IOC EB strongly urges International Sports Federations and organisers of sports events worldwide to do everything in their power to ensure that no athlete or sports official from Russia or Belarus be allowed to take part under the name of Russia or Belarus. Russian or Belarusian nationals, be it as individuals or teams, should be accepted only as neutral athletes or neutral teams. No national symbols, colours, flags or anthems should be displayed."

The IOC's announcement is expected to hasten a decision from FIFA over whether Russia will be allowed to compete in the World Cup play-offs in March.

Poland, Sweden and the Czech Republic all declared they would not play against Russia due to the Ukraine conflict, but world football's governing body initially chose only to ban the country's anthem and flag from matches and order them to play as the Football Union of Russia (RFU).

Russian tennis player Daniil Medvedev was confirmed as the new leader of the ATP world rankings on Monday, becoming the first man since Andy Roddick in 2004 to become world number one other than Novak Djokovic, Roger Federer, Rafael Nadal or Andy Murray.

Daniil Medvedev has officially been crowned as the ATP's new world number one.

The Russian, who claimed his first grand slam title at the US Open last year and reached this year's Australian Open final, only to lose to Rafael Nadal, has been sure of his place at the top of the rankings since Novak Djokovic's shock defeat to Jiri Vesely in the Dubai Tennis Championships last week.

Medvedev was aiming to cap off a sensational week by claiming victory at the Mexican Open, but the 26-year-old lost to eventual champion Nadal in the semi-finals in Acapulco.

Here, Stats Perform looks at the numbers behind Medvedev's rise to number one.

1 - Medvedev is the first player outside of the "big four" of Djokovic, Nadal, Roger Federer and Andy Murray to be crowned number one since Andy Roddick, way back on February 1, 2004 (18 years, three weeks and six days).

198 - At 198cm in height, Medvedev is the tallest player to be crowned world number one.

13 - Medvedev has won 13 Tour-level titles so far.

27 - He is the 27th different ATP world number one. The first was Ilie Nastase, in August 1973.

3 - Medvedev is the third Russian player to reach the top of the ATP rankings, after Yevgeny Kafelnikov (May 1999) and Marat Safin (November 2000).

6 - At 26, Medvedev is the sixth-oldest player to become world number one for the first time in their career.

361 - Djokovic has held the number one spot for 361 weeks in total – a record. It had been 86 weeks since the Serbian was last not at the top of the pile.

Former US Open winner Sloane Stephens claimed her first WTA title since 2018 after downing Marie Bouzkova in three sets in Sunday's Abierto Zapopan decider in Guadalajara.

American sixth seed Stephens triumphed 7-5 1-6 6-2 in an epic final which lasted two hours and 28 minutes against 96th-ranked Bouzkova.

Stephens, who won the 2017 US Open, has struggled to re-discover her previous levels of success in recent years, having gone undefeated in the first six WTA singles finals of her career and reaching the world number three ranking.

But Sunday's triumph – Stephens' seventh career WTA title - marks a major return to form for the 28-year-old who lost in the first round of last month's Australian Open to Emma Raducanu.

Stephens had trailed 4-1 in the first set but hit back before Bouzkova double faulted on break point at 5-5.

However, the Czech responded in a one-sided second set, breaking Stephens early and never looking back.

The American claimed the first break of the deciding set at 3-2, with Bouzkova letting slip a 40-0 lead, with Stephens' forehand leading her to victory.

Pedro Martinez secured his maiden ATP Tour title with a 4-6 6-4 6-4 victory over Sebastian Baez at the Chile Open on Sunday.

Both players were competing for their first success in Santiago, with fourth seed Martinez appearing in his second tour-level final after losing to Casper Ruud in Kitzbuhel in July.

World number 72 Martinez sat six places above his opponents in the rankings, but it was seventh seed Baez who claimed the first set before the Spaniard bounced back to send the match to a decider.

Martinez carried that second-set impetus into the final set, eventually triumphing after 2 hours and 48 minutes as he condemned Baez to just his third loss in 29 outings in Chile since the start of the 2021 season.

Elina Svitolina has penned an emotive letter to her homeland of Ukraine, pledging to donate her prize money to military and humanitarian needs after Russia's invasion.

Russia invaded neighbouring Ukraine on Thursday. That conflict has escalated over the weekend.

Russia and Vladimir Putin's government faces heavy political and financial sanctions, while sports organisations such as the International Olympic Committee (IOC) and UEFA have also condemned the attack.

St Petersburg has been stripped of this season's Champions League final, while Poland, Sweden and the Czech Republic have refused to play Russia in qualifiers for the upcoming FIFA World Cup. Formula One has pulled the Russian Grand Prix from its race calendar for 2022.

Several tennis players have spoken out against Russia's aggression, including Russian duo Andrey Rublev and Daniil Medvedev, who will ascend to world number one in the ATP rankings on Monday.

On Saturday, Svitolina – the former WTA world number three – told Sky Sports News she was "shocked at this terrible nightmare".

Svitolina has family and friends back in Ukraine and, on Sunday, she posted an emotional message on her social media channels.

"Letter to my Motherland, I am currently far away from you, out of sight from my loved ones, far from my people, but my heart has never felt so warm and filled of your soul," Svitolina's message read.

"It is difficult to express how special you are. To me you are strong, beautiful and unique. You gave me everything and I cherish every piece of you: your culture, your education, your lands, your seas, your cities, your people. My people.

"My people, every day I fear for you. I am devastated, my eyes won't stop crying, my heart won't stop bleeding. But I am so proud. See our people, our mothers, our fathers, our brothers, our sisters, our children, they are so brave and strong, fighting to defend you. They are heroes.

"I commit to redistribute the prize money of my next tournaments to support army and humanitarian needs and help them to defend you, our country.

"Ukraine, you unify us, you are our identity. You are our past and our future. We are Ukraine."

Svitolina also called on other nations to continue to step up their efforts to stop the invasion.

"May the world see it and help us to join forces to protect you," she wrote. "You are in all my thoughts and prayers. You are always with me. I am Ukraine. We are Ukraine."

Rafael Nadal said he will not measure himself against other players' records until his career is over after adding another trophy to his impressive collection, beating Cameron Norrie in straight sets to lift the Mexican Open.

Nadal continued his undefeated start to 2022 with his third title for the year after beating the British sixth seed 6-4 6-4 in Acapulco on Saturday.

He is now on a run of 15-0 this season, claiming his 91st ATP Tour crown along the way.

It was also Nadal's fourth Mexican Open title, having previously won in 2005, 2013 and 2020.

His recent win at the Australian Open put him clear of Novak Djokovic and Roger Federer on 21 grand slam titles, but he still sits behind Ivan Lendl (94), Federer (103) and Jimmy Connors (109) for ATP tournament victories.

After his win in Mexico, Nadal said he is not concerned about records as long as he is still playing, saying: "At the end of the day, I've always said that this kind of record needs to be measured once your career is over.

"Today the most important thing is that I have won a prestigious tournament."

The 35-year-old's incredible form is all the more impressive considering he was forced to miss last year's US Open to deal with a foot issue that troubled him all the way to the lead-up to January's Australian Open.

"It was complicated, and I ended up taking the victory. Looking back, a few weeks ago this would have looked impossible," he added.

"It's amazing how things can change in such a short span, from not being able to practice and now to be where I am today."

Rafael Nadal continued his remarkable start to 2022 with his third title for the year after beating British sixth seed Cameron Norrie 6-4 6-4 in the Mexican Open final in Acapulco on Saturday.

The 21-time major winner extended his 15-0 winning run for the calendar year, claiming his 91st ATP Tour crown along the way. The triumph was also Nadal's fourth Mexican Open title, having also won in 2005, 2013 and 2020.

Nadal, who beat new world number one Daniil Medvedev in the semi-finals and did not drop a set in Acapulco, won in one hour and 54 minutes over a dogged Norrie.

The 35-year-old's achievements are all the more remarkable considering he was forced to miss last year's US Open to deal with a foot issue which troubled him all the way to the lead-up to January's Australian Open.

Norrie pushed the Spaniard, breaking back late in the second set when trailing 5-2, but the defeat ends his eight-game winning streak after lifting the Delray Beach Open title last week.

The Spaniard made 79 per cent of first serves, winning 71 per cent on them, while he converted four of his five break points for the match in typical ruthless fashion.

Nadal claimed the only break of the first set in the fifth game, capitalising on a trio of misses from Norrie.

Both players broke serve early in the second set, with Norrie leading 2-1 before Nadal rattled off four straight games to serve for the crown.

However, Norrie was not done yet, breaking back and holding serve, before the Spaniard finished the job in his 128th appearance in an ATP decider.

American sixth seed Sloane Stephens will face Czech Marie Bouzkova in the WTA Abierto Zapopan final in Guadalajara on Sunday after the pair triumphed in Saturday's semi-finals.

The 2017 US Open champion qualified for her first final since 2018, winning 3-6 7-5 (ret) with Russian opponent Anna Kalinskaya succumbing to injury late in the second set.

Kalinskaya retired shortly after Stephens claimed the second set having battled through back pain for several games, with the match moving close to two hours.

The Russian had shown signs of injury during Friday's quarter-final win over Camila Osorio which she won in straight sets, yet Kalinskaya raced into the lead in the first set against Stephens.

Bouzkova, who knocked out reigning champion Sara Sorribes Tormo in Friday's quarter-finals, triumphed 6-3 6-3 oover Qiang Wang  in one hour and 31 minutes.

The 23-year-old Czech is ranked 96th in the world and has never won a WTA Tour singles title.

Andrey Rublev cruised to the Dubai Tennis Championship title with a 6-3 6-4 final victory to end the dream run of qualifier Jiri Vesely.

Having made headlines after his semi-final triumph over Hubert Hurkacz by writing "no war please" on a television camera in protest at Russia's invasion of Ukraine, Rublev wrapped up his third title in just a matter of days in emphatic fashion, after winning both the singles and doubles titles at the Open 13 Provence in Marseille last week.

The Russian world number seven had needed three sets in each of his last three contests but wrapped up a more straightforward victory against his Czech opponent, who had defeated 20-time Grand Slam champion Novak Djokovic en route to the final.

Rublev broke Vesely's serve in the fourth game of the contest, not dropping a single point behind his first serve as he roared to a 6-3 win in the opening set.

The 24-year-old then broke again in the opening game of the second set, before the Czech, ranked number 123 in the world, battled back bravely to level the set at 3-3.

Rublev responded in brutal fashion, however, immediately breaking again and going on to seal a comfortable victory, hitting just eight unforced errors throughout the contest, as he claimed his 10th career title.

The victory made it 13 match wins in a row for Rublev across singles and doubles after his successful time in Marseille, where he successfully teamed up with Ukrainian Denys Molchanov for a symbolic doubles triumph.

"I was lucky today, and that's why I am happy to be the champion, I didn't expect this," said Rublev. "It's an amazing feeling and I don't know what to say."

Iga Swiatek thrashed Anett Kontaveit on Saturday to win the Qatar Ladies Open title.

The world number eight triumphed 6-2 6-0 to win her first Tour title of 2022 and the fourth of her career.

Swiatek, who has now claimed two titles at the WTA 1000 level, won the final 10 games of the contest as Kontaveit was powerless to stop her nine-match winning streak coming to an end.

The 2020 French Open champion Swiatek has only dropped 11 games in the four finals she has won.

Kontaveit fought back to 2-2 after an early break of serve, but that was the last time she would win a game as Swiatek took control.

Having survived break points to see out the opening set, Swiatek powered through the second, dropping just four points on serve as she raced to victory in 66 minutes.

Swiatek has now won her last three matches against Kontaveit, taking the overall head-to-head record to 3-2 wins in her favour.

Ukrainian tennis star Elina Svitolina is "really praying" for her country after Russia invaded on Thursday, following weeks of rising political tensions in the region.

The conflict escalated further on Friday, with the fighting reaching the capital city of Kyiv.

Several high profile sports figures have publicly expressed their opposition to war, including Russia's Andrey Rublev who wrote "no war please" on a camera lens at the Dubai Tennis Championships, joining compatriot Daniil Medvedev in calling for peace.

Svitolina - who is ranked 15th in the world - has said she is praying for peace and trying to keep in contact with her family back in Ukraine.

"I'm shocked at this terrible nightmare," Svitolina told Sky Sports News. "I'm really praying every single minute for my family, for my friends, for all people in Ukraine and around the world for safety, for peace.

"Considering what people are going through in Ukraine and what my family are going through while being in Ukraine and friends, I try to keep in contact with them to see what's happening there.

"I'm very safe compared to them. To be honest with you, I'm only thinking about them and for me, it's a very stressful time because I cannot do anything. I cannot really help them. I wish I could help them. It's extremely tough mentally for me. I cannot imagine what they are going through. I'm just praying.

"It's a horrible situation for the people in Ukraine, what they have to go through without sleepless nights, without food and electricity so that's horrible. For me, it's heartbreaking to hear this.

"The war is something we have to stop and it's something better than anything else. What is happening is very tough for me to imagine."

Rafael Nadal continued his tremendous form as he beat Daniil Medvedev in straight sets to set up a final with Cameron Norrie at the Mexican Open.

Nadal found this victory over Medvedev to be more straightforward than his remarkable five-set comeback win in last month's Australian Open final between the pair, winning 6-3 6-3 in Acapulco.

The victory means the Spaniard moves on to 14-0 for the new season, which is already his best ever start to a year.

The soon-to-be world number one Medvedev at least made him work for it in the second set and earned 11 break points across two consecutive service games, but a determined Nadal rescued all 11 of them, including seven in a marathon nine-deuce game at 6-3 3-2.

"I played some amazing points on the break points," said Nadal following the win. "The second set was very emotional. Daniil was playing very aggressive – drop shots, winners. It was a very difficult set. I feel lucky to win that set because he had a lot of chances."

He will now face sixth seed Norrie on Sunday, who also came through his semi-final against third seed Stefanos Tsitsipas in straight sets, 6-4 6-4.

The Brit – who won the Delray Beach Open last week – was particularly impressive on his serve, making 92 per cent of his first serves in the opening set. That dropped to 57 per cent in the second, but the quality of his baseline shots took him to victory.

Meanwhile at the Chile Open, local wildcard Alejandro Tabilo continued his good run, having already knocked out top seed Cristian Garin, with a 6-1 6-4 win over sixth seed Miomir Kecmanovic.

Tabilo will face Pedro Martinez in the semi-finals after the Spaniard won 6-2 6-2 over Yannick Hanfmann.

Sebastian Baez will meet second seed Albert Ramos Vinolas in the other semi-final after he got past Facundo Bagnis 7-5 6-2.

Sloane Stephens fought back from a set down to reach her first hard court semi-finals since 2018 as she defeated Daria Saville at the WTA Abierto Zapopan on Friday.

The 2017 US Open champion triumphed in two hours and 29 minutes over the Australian, winning 4-6 6-3 6-2 in Guadalajara.

Stephens, who will play Russian Anna Kalinskaya in the last four, had not reached a hard court semi since the 2018 WTA Finals.

But the American was forced to do it the hard way after losing the first set, saving nine of 13 break points across the match, with her ability to win second serve points proving key.

Colombian fourth seed Camila Osorio was bundled out in 80 minutes by Kalinskaya 6-4 6-1.

There was also a straight-sets win for Marie Bouzkova after she defeated third seed Sara Sorribes Tormo 6-4 6-1.

She will face Wang Qiang in the last eight, who proved too good for Slovakian Anna Karolina Schmiedlova 6-2 6-3.