Naomi Osaka bowed out of the Berlin Open after falling short in a three-set thriller against an inspired serving display from Zheng Qinwen.
The former world number one battled, but ultimately came up short for the second time in two weeks, enduring a 6-4 3-6 6-3 defeat.
The Japanese found herself a set down following a break point claimed in the fifth game by her opponent but rallied in the second to take the encounter to a deciding set.
However, Zheng, who served 10 aces in the final set, proved too powerful for Osaka to secure a second victory over the Japanese after two hours and 10 minutes at the Steffi Graf Stadium.
Zheng will play Katerina Siniakova in the last 16 on Wednesday, with either Jessica Pegula or Donna Vekic awaiting should she progress.
Data Debrief: Acing it
The victory for Zheng saw her serve 23 aces against Osaka, the highest tally in a single WTA match since Rebecca Marino vs Caroline Garcia in Guadalajara in 2022 (24).
Her success with her serving saw Zheng win 88 per cent of her first serve points, winning 44 of 50 during the match.
Alcaraz beaten on Laver Cup debut with Zverev in doubles
Carlos Alcaraz suffered defeat on his Laver Cup debut, as he was beaten in straight sets alongside Alexander Zverev in doubles by Taylor Fritz and Ben Shelton.
Team Europe put up a strong fight but struggled to match Fritz and Shelton, who won 7-6 (7-5) 6-4 in one hour and 37 minutes.
Alcaraz and Zverev made a slow start to the match, losing their serve in the fourth game as the Americans went on a three-game winning streak, but they pulled it back to level the tie, only to lose the tie-break.
Team Europe looked to have found their groove in the second set but failed to convert four break points in the fourth game as Fritz and Shelton levelled the score at 2-2.
A three-game winning run at the end of the set, including one more break, was enough to get Team World over the line, pulling them back to 2-2 at the end of day one.
Francisco Cerundolo had originally given Team World the lead with a shock win over Casper Ruud before Stefanos Tsitsipas and Grigor Dimitrov's wins had put Team Europe 2-1 up.
Federer hopes Nadal continues his career into 2025
Roger Federer believes it would be "phenomenal" if Rafael Nadal prolonged his career into 2025 but admits it is up to the Spaniard himself to make that choice.
Nadal last played at the Paris Olympics, where he competed in both singles and doubles, and has since ruled himself out of the US Open and Laver Cup.
It is still uncertain whether the 22-time grand slam champion will continue to play next season, but his long-time rival Federer would love for him to play on for just a bit longer.
When asked how he felt about Nadal pulling out of the Laver Cup, Federer told dta: "I really hoped he would somehow get a match in the end, but he just said he'd rather not do it, and that he doesn't feel ready.
"But he seems good. I think he just has to decide what to do next, and I think that's what he's going through at the moment. He's done everything for the sport.
"It would be phenomenal if he could go on for another season, but only Rafa himself can answer that. In the end, it might be helpful to make a decision at some point."
Furthermore, the eight-time Wimbledon champion still believes Novak Djokovic is one of the favourites for next year's Australian Open, despite the Serb not picking up a Grand Slam title this season for the first time since 2017.
He said: "Novak, winning the Olympics and playing somewhat, let's say a full season - he didn't bow out because of injuries, he chose to play less, which is normal when you get a bit older.
"I feel like he has chances moving forward. I look forward to Australia, which is the next Slam. I think [Novak is] definitely going to be one of the favourites along with [Jannik] Sinner and [Carlos] Alcaraz."
Djokovic is a 10-time champion in Melbourne but fell to defeat against Jannik Sinner in this year's semi-finals.
His next event will be at the Shanghai Masters, which commences on October 2.
Raducanu roars through to Korea Open quarter-finals
Emma Raducanu booked her place in the Korea Open quarter-finals with a straight-sets victory over Yue Yuan.
The former US Open champion wrapped up a 6-4 6-3 win in just over two hours in Seoul, where she will play either top seed Daria Kasatkina or Hailey Baptiste.
Yue, who was runner-up in this event 12 months ago, recovered an early break to hold a slender 4-3 lead in the opening set.
However, Raducanu took control with a run of six successive games to draw first blood, before taking control of the second set with a double-break for 3-0.
Yue fought back to 3-2, but saw a break point go begging in the following game as the Briton eventually held to remain in command.
Raducanu had to be patient as her opponent saved five match points to break in game eight, but the world number 70 eventually converted her seventh for victory.
Data Debrief: Raducanu roars into last eight
Raducanu has spoken of how she intends to "thrive in Asia" and she is in a good position to do that after reaching her fifth quarter-final of 2024.
The Briton certainly dominated on the serving front as she hammered 11 aces without reply, while also converting six out of nine break points.
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