PRAGUE (AP) — Kristyna Pliskova upset second-seeded Petra Martic 6-1, 7-5 to advance to the quarterfinals of the Prague Open on Wednesday.
Pliskova, ranked 69th, hit nine aces and 28 winners...
NEW YORK (AP) — Mona Barthel has pulled out of the U.S. Open because of an injured right foot, allowing 2013 Wimbledon semifinalist Kirsten Flipkens to get into the field.
WASHINGTON (AP) — Teenage qualifier Caty McNally has reached the quarterfinals of the Citi Open.
The 17-year-old beat fellow American Christina McHale 6-3, 1-6, 6-3 on Thursday. McNally...
DUBAI, United Arab Emirates (AP) — Former champions Petra Kvitova and Simona Halep overcame windy conditions to reach the quarterfinals of the Dubai Championships on Wednesday.
BRISBANE, Australia (AP) — Kei Nishikori won his first ATP title since Memphis in 2016 with a dominating final set to beat Daniil Medvedev 6-4, 3-6, 6-2 in the Brisbane International final on Sunday.
The 2014 U.S. Open finalist served for the match at 5-1 in the third set, but Medvedev earned a temporary reprieve when he broke the Japanese player's serve to extend the match.
BRISBANE, Australia (AP) — She's ranked No. 5 in the world, will enter the season-opening major as a reigning Grand Slam champion, and is trying not to sulk.
A lot has happened for Naomi Osaka since she beat Serena Williams in the U.S. Open final last September, and she's still coming to terms with it. Mostly, it's the expectations.
She has reached the semifinals or better at four of her last five tournaments but hasn't added another title.
BEIJING (AP) — U.S. Open champion Naomi Osaka and second-ranked Caroline Wozniacki both advanced to the second round of the China Open on Monday.
The eighth-seeded Osaka beat Zarina Diyas 6-4, 6-3, while Wozniacki defeated Belinda Bencic 6-2, 6-3.
Osaka will next face Danielle Collins, who advanced on Sunday.
WUHAN, China (AP) — Daria Kasatkina recorded her first victory over Lesia Tsurenko in three attempts in the first round of the Wuhan Open on Sunday as US Open champion Naomi Osaka was forced to pull out of the tournament due to a viral illness.
Kasatkina, the No. 13 seeded Russian, defeated her Ukrainian opponent 6-4, 7-5 to set up a second round match against either Bernarda Pera or the US Open junior champion and qualifier Wang Xiyu.
NEW YORK (AP) — Kei Nishikori looked around Arthur Ashe Stadium and noticed the crowd.
With Nishikori playing immediately after Naomi Osaka on Wednesday, the U.S. Open became must-see viewing for Japanese tennis fans.
"It's good to have, you know, home support outside of Japan," he said. "Yeah, it's great news we're both in the semis."
NEW YORK (AP) — Lesia Tsurenko leaned on her racket, looking like she was about to collapse.
The medical team had already asked if she wanted to stop, and this time Tsurenko was thinking about it.
"At some point," she said, "I just thought that it's over for me for today."
Doubled over between points, not even running during some of them, Tsurenko said she was dizzy, unable to deal with the heat that returned to the U.S. Open on Monday after a brief comfortable spell.
NEW YORK (AP) — All it took was two rounds at the U.S. Open for the top two seeded women to leave the draw, with No. 2 Caroline Wozniacki following No. 1 Simona Halep on the way out.
For Wozniacki, a two-time finalist at Flushing Meadows and the reigning Australian Open champion, her 6-4, 6-2 loss to 36th-ranked Lesia Tsurenko of Ukraine on Thursday night was a second consecutive second-round Grand Slam exit.
BIRMINGHAM, England (AP) — Barbora Strycova closed in on a third Birmingham Classic final after avenging herself on Lesia Tsurenko on Friday.
Boosted from beating Wimbledon champion Garbine Muguruza on Thursday, Strycova prevailed 7-5, 3-0 when Tsurenko quit with a painful left hip.
HOBART, Australia (AP) — Elise Mertens will defend her Hobart International title in the final after eliminating 2015 champion Heather Watson 6-4, 1-6, 6-2 on Friday.
Mertens will play Mihaela Buzarnescu of Romania, who has reached her maiden WTA final.
Buzarnescu beat fifth-seeded Lesia Tsurenko 6-2, 6-2 in her second career semifinal. She is guaranteed to break into the top 50 rankings for the first time on Monday.
HOBART, Australia (AP) — British qualifier Heather Watson won the first 11 games of the match in defeating Donna Vekic 6-0, 6-4 and advancing to the Hobart International semifinals on Thursday.
Leading 5-0 in the second set, Vekic won four games in a row before Watson clinched it.
"I knew she'd change something and swing freely because you've got nothing to lose at that point," Watson said. "I just had to stick with her."
MOSCOW (AP) — Kristina Mladenovic and Coco Vandeweghe were among six seeded players to make an exit from the Kremlin Cup on Wednesday.
The run of defeats left seventh-seeded Julia Goerges, the world No. 27, as the highest-ranked player remaining.
Top-seeded Mladenovic landed only 49 percent of her first serves and was beaten 6-2, 2-6, 6-2 by Aliaksandra Sasnovich, while No. 2 seed Vandeweghe lost 7-5, 1-6, 6-2 to Lesia Tsurenko.
Mladenovic and Vandeweghe had both received byes in the first round.
WUHAN, China (AP) — Top-ranked Garbine Muguruza advanced to the third round of the Wuhan Open by beating Lesia Tsurenko 6-4, 6-4 Tuesday.
The Wimbledon champion from Spain broke her opponent early in each set. She will next face Magda Linette of Poland.
"Two years ago I left here in the final. I always play well in China," said Muguruza, who lost to Venus Williams in the 2015 championship match. "I will try to just keep going forward."
WUHAN, China (AP) — Katerina Siniakova beat a top-20 player for the sixth time this year when she ousted Kristina Mladenovic of France 6-3, 6-2 in the first round of the Wuhan Open on Sunday.
The Czech, who has two singles titles already this year, deepened the hole occupied by Mladenovic. It was her eighth straight loss, all to players ranked outside the WTA top 25.
Ekaterina Makarova of Russia won nine games in a row from 4-1 down on her way to beating Anastasija Sevastova 6-4, 6-2.
STANFORD, Calif. (AP) — Top-seeded Garbine Muguruza rolled past Croatia's Ana Konjuh 6-1, 6-3 in just over an hour on Friday to reach the semifinals of the Bank of the West Classic.
The reigning Wimbledon champion broke Konjuh's serve twice for an early 3-0 lead and never trailed in the match.
STANFORD, Calif. (AP) — Wimbledon champion Garbine Muguruza beat Kayla Day 6-2, 6-0 to reach the Bank of the West Classic quarterfinals on Wednesday, easily advancing from her first competitive match since beating Venus Williams in the final at the All England Club last month.
The top-seeded Muguruza overwhelmed the 17-year-old American in less than an hour.
"Kayla has just won the US Open in juniors and she's just very promising, so I knew I had to be concentrated today," Muguruza said.
STANFORD, Calif. (AP) — Reigning Wimbledon champion Garbine Muguruza eased by American Kayla Day 6-2, 6-0 to reach the quarterfinals of the Bank of the West Classic on Wednesday.
Muguruza, the top seed and fourth-ranked Spaniard, overwhelmed the 17-year-old in under an hour.
"Kayla has just won the US Open in juniors and she's just very promising, so I knew I had to be concentrated today," Muguruza said after her first match since Wimbledon.
STANFORD, Calif. (AP) — Maria Sharapova has withdrawn from the Bank of the West Classic with soreness in her left arm and underwent testing.
The tournament made the announcement Wednesday, saying wild-card entry Sharapova was pulling out of the event at Stanford based on the recommendation of a doctor as a "preventative decision" to avoid further injury trouble.
She had been scheduled to play Wednesday night, so seventh-seeded Lesia Tsurenko moves on to the quarterfinals.
MADRID (AP) — Second-seeded Karolina Pliskova struggled to beat Lesia Tsurenko of Ukraine 7-6 (5), 2-6, 6-2 in the first round of the Madrid Open on Saturday.
Pliskova was up 5-2 in the first set but Tsurenko fought back to force a tiebreaker that Pliskova won by hitting two of her five aces.
Tsurenko recovered from a break down to claim the second set, but Pliskova broke her three times in the decisive third set.
MELBOURNE, Australia (AP) — It's new and exciting for Andy Murray and Angelique Kerber, entering a Grand Slam tournament with the No. 1 in front of their names.
Both reached the top of the rankings for the first time near the end of 2016, ending long reigns by Novak Djokovic and Serena Williams.
And so they'll open their Australian Open campaigns on Rod Laver Arena on day one — both against Ukrainians.
TASHKENT, Uzbekistan (AP) — Defending champion Nao Hibino reached the semifinals of the Tashkent Open on Thursday, advancing when Lesia Tsurenko retired after losing the first set 7-6 (6).
Tsurenko, who won last week's Guangzhou Open, had been on a seven match winning streak.
Hibino, the fourth-seeded player from Japan, will play ninth-seeded Denisa Allertova of the Czech Republic in the semifinals. Allertova defeated second-seeded Kirsten Flipkens of Belgium 7-5, 6-4.
TASHKENT, Uzbekistan (AP) — Second-seeded Kirsten Flipkens of Belgium saved 12 of 14 break points and beat Ana Bodgan of Romania 7-6 (7), 6-3 on Tuesday in the first round of the Tashkent Open.
Flipkens is the highest ranked player in the tournament after top-seeded Johanna Larsson withdrew with an illness before main-draw play began.
The Belgian will face Greece's Maria Sakkari in the second round.