ELISE MERTENS

Naomi Osaka retired from her opening match at the National Bank Open due to a back injury Tuesday. Osaka was trailing Estonia's Kaia Kanepi 7-6 (4), 3-0 when she withdrew from the match. Entering the tournament, Osaka had been eliminated from her last three competitions in the first or second round, including a straight-sets loss to Coco Gauff at last week’s Mubadala Silicon Valley Classic.

Former tennis player Sue Barker is stepping down from her role working as a commentator and presenter at Wimbledon for the BBC.

Novak Djokovic found himself locked in a tight fourth-round match at Wimbledon against a wild-card entry making his Grand Slam tournament debut.

Third-seeded Ons Jabeur saved five set points in the first-set tiebreaker before beating Elise Mertens 7-6 (9), 6-4 to reach her second straight Wimbledon quarterfinal.

It's been quite a visit to Paris for 18-year-old American Coco Gauff.

Sloane Stephens has returned to the French Open quarterfinals for the first time since 2019 by beating Jil Teichmann 6-2, 6-0.

Rafael Nadal will see a familiar face in the opposite corner for his fourth-round match at the French Open.

Last year’s French Open champion in singles and doubles says she has tested positive for COVID-19 and will withdraw from the tournament.

Rafael Nadal is still perfect.

Roger Federer and Novak Djokovic have offered their congratulations to Rafael Nadal for breaking their three-way tie atop the men’s Grand Slam standings and becoming the first member of the trio to win No. 21.

Alize Cornet has finally reached the quarterfinals of a Grand Slam tournament in her 63rd attempt.

Daniil Medvedev has reached the fourth round at the Australian Open for a fourth straight year after a 6-4, 6-4, 6-2 win over Botic Van de Zandschulp.

Andy Murray held off 21st-seeded Nikoloz Basilashvili in five sets to win a match at the Australian Open for the first time in five years.

Four months later and on the other side of the world, Leylah Fernandez lost to a 133rd-ranked wild-card entry in her first Grand Slam match since her runner-up finish at the U.S. Open. The 19-year-old Canadian had an upset 6-2, 6-4 loss to Maddison Inglis in the first round of the Australian Open on Tuesday, the third straight year she’s failed to progress to the second round at the first tennis major of the year. Fernandez made 30 unforced errors, dropped her serve three times and hit only eight winners on 1573 Arena against Inglis, who converted her third match point to complete her very first win in the main draw of a major.

Garbiñe Muguruza has defeated Anett Kontaveit 6-3, 7-5 to win the WTA Finals for the first time.

Nikoloz Basilashvili beat American Taylor Fritz 7-6 (5), 6-3 to set up a final against Cameron Norrie at the BNP Paribas Open.

While the Americans are all done in singles at the U.S. Open, there’s still some home hopes in doubles.

Carlos Alcaraz is the youngest male quarterfinalist at the U.S. Open since 1963.

American Danielle Collins captured her second career title in just a two-week span, holding off No. 4 seed Daria Kasatkina of Russia 6-3, 6-7 (10), 6-1 after a thrilling second-set tiebreaker to win the Mubadala Silicon Valley Classic.

Wimbledon crowd favorite Andy Murray has been eliminated in straight sets in the third round by No. 10-seeded Denis Shapovalov.

Ashleigh Barty of Australia, returns to Victoria Azarenka of Belarus, during the Miami Open tennis tournament, Monday, March 29, 2021, in Miami Gardens, Fla. (AP Photo/Marta Lavandier)MIAMI – Ash Barty is tough to beat under any circumstances, especially when she’s on the ropes. The world’s top-ranked player has reached the Miami Open quarterfinals, getting there by holding off 14th-seeded Victoria Azarenka of Belarus 6-1, 1-6, 6-2. This, too, was cool: The match lived up to its showdown potential, with the reigning Miami Open champion and current world No. 1 in Barty facing someone who has won the Miami title three times and a previous world No. Svitolina will play unseeded Anastasija Sevastova of Latvia in the quarters; Sevastova was a 6-1, 7-5 winner over wild-card Ana Konjuh of Croatia.

(AP Photo/Hamish Blair)Naomi Osaka's Australian Open championship moved her up one spot to No. 2 in the WTA rankings Monday, while men's finalist Daniil Medvedev rose to a career-best No. Aslan Karatsev's historic run from qualifying to the final four before losing to nine-time Australian Open champion Djokovic allowed him to vault 72 places from 114th to 42nd. Barty took nearly a full year off, for example, but still has her points from winning the 2019 French Open and reaching the semifinals at the 2020 Australian Open. Aryna Sabalenka now leads the WTA doubles rankings after pairing with Elise Mertens to win the Australian Open women's doubles title.

United States' Jessica Pegula celebrates after defeating Ukraine's Elina Svitolina in their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Feb. 15, 2021. “I’m just happy I’m here; she's been playing some good tennis, solidifying herself as a top player.”AdThe 61st-ranked Pegula beat No. “A lot of people were complaining, and I told myself I wasn’t going to complain,” Brady said. Also on that half of the draw, Rafael Nadal moved closer to a men's-record 21st Grand Slam trophy by overwhelming No. “I’m super excited for her making her first Grand Slam quarterfinal.

Spain's Rafael Nadal waits for a serve from Britain's Cameron Norrie during their third round match a the Australian Open tennis championships in Melbourne, Australia, Saturday, Feb. 13, 2021. He reached the fourth round at Melbourne Park for the 14th time in 16 trips. The top-seeded Australian beat Ekaterina Alexandrova of Russia 6-2, 6-4 to reach the fourth round of the Australian Open for the third straight year. The seventh-seeded Rublev will meet Casper Ruud of Norway in the fourth round. 5 seed Stefanos Tsitsipas beat Mikael Ymer of Sweden 6-4, 6-1, 6-1 in the third round.

United States' Sofia Kenin leaves the court following her second round loss to Estonia's Kaia Kanepi during at the Australian Open tennis championship in Melbourne, Australia, Thursday, Feb. 11, 2021. (AP Photo/Rick Rycroft)MELBOURNE – Sofia Kenin knew this would be a tough test at the Australian Open, a potentially early end to her first attempt to defend a Grand Slam title. Upon realizing she probably would be playing big-hitting veteran Kaia Kanepi in the second round, Kenin acknowledged, she “maybe kind of broke down a little bit.”Kenin was right to be worried. Kenin walked off the court crying after a 6-2, 6-2 loss last week in a tuneup event at the site of the Australian Open and explained afterward that her left leg was sore. 21 Alex de Minaur and Mackenzie McDonald, who beat 22nd-seeded Borna Coric 6-4, 6-2, 4-6, 6-4, and 39-year-old Feliciano Lopez.

An Australian Open courtesy car waits outside the Grand Hyatt hotel in central Melbourne, Australia, Thursday, Feb. 4, 2021. All competition at six Australian Open tuneup events scheduled for Thursday was called off after a worker at one of the tournaments' Melbourne quarantine hotels tested positive for COVID-19. The Australian Open is scheduled to begin Monday. Williams won her last major title at the 2017 Australian Open, when she was pregnant with her daughter, Olympia. On the bottom half of the draw, defending Australian Open champion Sofia Kenin rallied from a set and a break down to fend off Jessica Pegula 5-7, 7-5, 6-2.

Serbia's Novak Djokovic celebrates after defeating Canada's Denis Shapovalov in their ATP Cup match in Melbourne, Australia, Tuesday, Feb. 2, 2021. (AP Photo/Hamish Blair)MELBOURNE – Rafael Nadal didn't make it for Spain's ATP Cup opener because of a sore back, deciding it wasn't worth the risk a week ahead of the Australian Open. Nadal played more of a hand in that, with Djokovic limiting his time on court because of a blister. Back at Melbourne Park, where he has won a record eight Australian Open titles, he had plenty of energy to consume. Osaka, who won the U.S. Open last year and the Australian Open in 2019, will next face No.

(AP Photo/Alessandra Tarantino)PARIS – Prepping in the relative warmth of a gym before heading out with leggings and long sleeves to make her French Open debut against the tournament’s No. I realized it’s just a tennis match. Such a far cry from last year’s French Open: Gauff failed to make it out of qualifying, while Konta was making her way to her third Grand Slam semifinal. She also made it to the fourth round at this year’s Australian Open, beating 2019 champion Naomi Osaka en route. The lack of match play coming in.

Serena Williams, of the United States, reacts during a match against Tsvetana Pironkova, of Bulgaria, during the quarterfinals of the US Open tennis championships, Wednesday, Sept. 9, 2020, in New York. Two more victories for Williams would allow her to claim a record-tying 24th Grand Slam singles title. Williams last lost before the semifinals in New York all the way back in 2007, when Justine Henin eliminated her in the quarterfinals. Another 15 strokes followed, with Williams hitting a forehand passing shot that Pironkova volleyed into the tape of the net. That afforded Williams a third break point, which was converted for a 1-0 lead when Pironkova sent a forehand long.

Serena Williams, of the United States, reacts during a match against Tsvetana Pironkova, of Bulgaria, during the quarterfinals of the US Open tennis championships, Wednesday, Sept. 9, 2020, in New York. Williams last lost before the semifinals in New York in 2007, when Justine Henin eliminated her in the quarterfinals. Another 15 strokes followed, with Williams smacking a forehand passing shot that Pironkova volleyed into the net tape. A couple of times, Pironkova drew Williams forward with a drop shot, then took the point with a perfectly arced lob. But after compiling only five unforced errors in the first set, Pironkova had 21 over the last two.

Serena Williams, of the United States, serves to Tsvetana Pironkova, of Bulgaria, during the quarterfinals of the US Open tennis championships, Wednesday, Sept. 9, 2020, in New York. (AP Photo/Seth Wenig)NEW YORK The Latest on the U.S. Open tennis tournament (all times local):1:05 p.m.Serena Williams has dropped the first set of her U.S. Open quarterfinal against unseeded Tsvetana Pironkova by a 6-4 score. She broke Williams to lead 3-2, then failed to convert two set points while Williams served at 5-3. But Pironkova served it out in the next game. ___12:15 p.m.Serena Williams is about to start her U.S. Open quarterfinal against unseeded Tsvetana Pironkova.

(AP Photo/Frank Franklin II)NEW YORK The Latest on the U.S. Open tennis tournament (all times local):8:35 p.m.Victoria Azarenka is headed to another U.S. Open showdown against Serena Williams with a shot at the final on the line. A year after losing to Rafael Nadal in a nearly five-hour U.S. Open final, Medvedev will face No. ___ 1:45 p.m.Serena Williams has pushed her U.S. Open quarterfinal against Tsvetana Pironkova to a third set. ___1:05 p.m.Serena Williams has dropped the first set of her U.S. Open quarterfinal against unseeded Tsvetana Pironkova by a 6-4 score. She broke Williams to lead 3-2, then failed to convert two set points while Williams served at 5-3.

Novak Djokovic, of Serbia, front, holds his winning trophy after winning his match with Milos Raonic, of Canada, at the Western & Southern Open tennis tournament Saturday, Aug. 29, 2020, in New York. Has been challenging mentally and emotionally for me to stay sane and be able to compete on the highest level and win this title, Djokovic said. I just hope Im giving myself, you know, the opportunity and the chance to have enough time to recover ahead of the U.S. Open, Osaka said. Djokovic also won the Western & Southern Open in 2018 and is now the first man to win each Masters 1000 event one level below the Grand Slams at least twice. Osaka initially felt a problem with her leg in her first match of the Western & Southern Open and said she pulled the hamstring in the second-set tiebreaker of her semifinal Friday.

Naomi Osaka, of Japan, returns a shot from Elise Mertens, of Belgium, during the semifinals at the Western & Southern Open tennis tournament Friday, Aug. 28, 2020, in New York. (AP Photo/Frank Franklin II)

Naomi Osaka, of Japan, returns a shot from Elise Mertens, of Belgium, during the semifinals at the Western & Southern Open tennis tournament Friday, Aug. 28, 2020, in New York. (AP Photo/Frank Franklin II)NEW YORK After two days of little sleep and unexpected stress, Naomi Osaka rose to the moment. Osaka won the 2018 U.S. Open and will be coming off a successful week in many ways heading into this one. The Western & Southern Open was moved from Mason Ohio to the U.S. Open site in Flushing Meadows because of pandemic precautions, creating a two-tournament event without spectators. Osaka will face resurgent Victoria Azarenka, who beat Johanna Konta 4-6, 6-4, 6-1 to reach the Western & Southern final for the first time since 2013, when she beat Serena Williams.

FILE - In this Aug. 26, 2020, file photo, Naomi Osaka, of Japan, returns a shot to Anett Kontaveit, of Estonia, during the quarterfinals at the Western & Southern Open tennis tournament in New York. (AP Photo/Frank Franklin II, File)NEW YORK Naomi Osaka will play in the Western & Southern Open semifinals, after all. As you know, I pulled out of the tournament yesterday in support of racial injustice and continued police violence. Osaka tweeted Wednesday that, as a Black woman, I feel as though there are much more important matters at hand that need immediate attention, rather than watching me play tennis. The Western & Southern Open is usually held in Ohio but was moved to the New York site of the U.S. Open this year because of the coronavirus pandemic.

Naomi Osaka, of Japan, leaves the court after winning her match with Anett Kontaveit, of Estonia, during the quarterfinals at the Western & Southern Open tennis tournament Wednesday, Aug. 26, 2020, in New York. Soon after, the whole tournament was put on hold for a day. Osaka tweeted that as a Black woman, she feels compelled to pull out of the tournament to put a focus on police shooting Black people. "Watching the continued genocide of Black people at the hand of the police is honestly making me sick to my stomach. I have to be patient, to try to enjoy every single match I play here after six months without competing.

Novak Djokovic, of Serbia, returns a shot from Tennys Sandgren during the third round at the Western & Southern Open tennis tournament Tuesday, Aug. 25, 2020, in New York. (AP Photo/Frank Franklin II)NEW YORK Novak Djokovics neck felt much better, and his tennis looked much better, in a 6-2, 6-4 victory over unseeded American Tennys Sandgren at the Western & Southern Open on Tuesday that improved the No. The Western & Southern Open is usually held in Ohio but was moved to the U.S. Opens site in Flushing Meadows this year to make for a two-event, no-spectator bubble amid the pandemic. He has won five of the past seven Grand Slam tournaments, including at the Australian Open in February. Womens quarterfinal matchups set earlier in the day were two-time Grand Slam champion Naomi Osaka against Anett Kontaveit, former No.