DOMINIK KOEPFER

Opelka put forth an outstanding performance Monday night in the second round of the Australian Open, dispatching Germany's Dominik Koepfer.

Daniil Medvedev was struggling so much with the suffocating heat and humidity in the Olympic tennis tournament that at one point the chair umpire asked him if he could continue playing.

Roger Federer withdraws from French Open over knee concerns Switzerland's Roger Federer celebrates after defeating Germany's Dominik Koepfer in their third round match on day 7, of the French Open tennis tournament at Roland Garros in Paris, France, Saturday, June 5, 2021. (AP Photo/Thibault Camus) (Thibault Camus)Tennis great Roger Federer withdrew from the French Open on Sunday citing knee concerns after narrowly winning a third round match that lasted 3 1/2 hours. He had the first of his knee surgeries shortly after competing. “The Roland Garros tournament is sorry about the withdrawal of Roger Federer, who put up an incredible fight last night,” tournament director Guy Forget said in a statement. We wish him all the best for the rest of the season.”La direction de Roland-Garros informe que Roger Federer déclare forfait pour les huitièmes de finale du tournoi.#RolandGarros pic.twitter.com/flCDZ5dQzU — Roland-Garros (@rolandgarros) June 6, 2021The Associated Press contributed to this report.

(AP Photo/Thibault Camus) (Thibault Camus)PARIS — (AP) — The Latest on the French Open (all times local):___5:05 p.m.Iga Swiatek and Bethanie Mattek-Sands have staged an improbable comeback to eliminate the top-seeded doubles team at the French Open. ___4:30 p.m.Roger Federer has withdrawn from the French Open to give himself a chance to recover after a long third-round match. The 39-year-old Federer was supposed to play against Matteo Berrettini in the fourth round on Monday. ___12:40 p.m.Tamara Zidansek has become the first Slovenian woman to reach the quarterfinals of a major tournament. The previous best by a Slovenian woman was when Katarina Srebotnik reached the fourth round at the French Open and the U.S. Open.

France Tennis French Open Switzerland's Roger Federer plays a return to Germany's Dominik Koepfer during their third round match on day 7, of the French Open tennis tournament at Roland Garros in Paris, France, Saturday, June 5, 2021. (AP Photo/Thibault Camus) (Thibault Camus)PARIS — (AP) — The Latest on the French Open (all times local):___4:30 p.m.Roger Federer has withdrawn from the French Open to give himself a chance to recover after a long third-round match. The 39-year-old Federer was supposed to play against Matteo Berrettini in the fourth round on Monday. The previous best by a Slovenian woman was when Katarina Srebotnik reached the fourth round at the French Open and the U.S. Open. She has never been in the fourth round before at a major and faces three-time French Open winner Williams for the first time.

France Tennis French Open Switzerland's Roger Federer celebrates after defeating Germany's Dominik Koepfer in their third round match on day 7, of the French Open tennis tournament at Roland Garros in Paris, France, Saturday, June 5, 2021. (AP Photo/Thibault Camus) (Thibault Camus)PARIS — (AP) — Roger Federer was honest with himself, and everyone else, before the French Open, saying he knew he didn’t have any chance of winning the title. — more French Open appearances in him. 8-seeded Federer vs. No. 3 Nadal vs. No.

France Tennis French Open Switzerland's Roger Federer plays a return to Germany's Dominik Koepfer during their third round match on day 7, of the French Open tennis tournament at Roland Garros in Paris, France, Saturday, June 5, 2021. (AP Photo/Thibault Camus) (Thibault Camus)PARIS — (AP) — Roger Federer was honest with himself, and everyone else, before the French Open, saying he knew he didn’t have any chance of winning the title. Still, neither he, nor anyone else, probably expected Federer to have such a hard time getting out of Week 1 at Roland Garros. — more French Open appearances in him at this stage of his career. Down a break, Koepfer broke back and extended the fourth set until Federer broke in the next-to-last game, then served out the victory.

Roger Federer has moved into the fourth round of a Grand Slam tournament for a record-extending 68th time after coming through a four-set test at the French Open against 59th-ranked Dominik Koepfer of Germany.

Matteo Berrettini has earned his debut trip to the French Open’s fourth round and joined a couple of teenagers from Italy to give their country a trio of men in Week 2 of a Grand Slam tournament for the first time.

Germany's Dominik Koepfer, right, congratulates Switzerland's Stan Wawrinka with his win in the second round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Wednesday, Sept. 30, 2020. (AP Photo/Alessandra Tarantino)PARIS – A tennis player at the French Open was visibly startled by a sonic boom Wednesday just as he was about to serve a ball. But with no forewarning, residents around Paris — along with fans and players inside Roland Garros — expressed their fears of an explosion on social networks. On Court Suzanne Lenglen, the second-biggest stadium at the French Open, Dominik Koepfer was interrupted mid-serve by the bang's loud clap. "It was a weird feeling, for one or two points I thought about it.”Wawrinka, the 2015 French Open champion, quickly sought to find out what happened.

(AP Photo/Alessandra Tarantino)PARIS – The Latest from the French Open (all times local):___9:35 p.m.American teenager Coco Gauff’s French Open debut has ended in the second round after she double-faulted 19 times in a 4-6, 6-2, 7-5 loss to 159th-ranked qualifier Martina Trevisan. Stefano Travaglia beat the Japanese player 6-4, 2-6, 7-6 (7), 4-6, 6-2 in the second round of the French Open after nearly four hours. 2-seeded Spaniard is looking to win his record-extending 13th French Open title and equal Roger Federer’s men’s record of 20 major titles overall. ___2:55 p.m.U.S. Open runner-up Victoria Azarenka is out of the French Open in the second round. They said it was "a fighter plane which has broken the sound barrier.”___12 p.m.Serena Williams is out of the French Open.

FLUSHING, N.Y. - Daniil Medvedev appears to be relishing the role of US Open villain. That changed when Medvedev won match point. "After the match, I engaged a little bit with the crowd," Medvedev said to reporters. "Thank you all, guys, because your energy tonight gave me the win," Medvedev said in an interview on court. He leads the ATP Tour this season with overall match wins (48), wins on hard courts (35) and finals appearances (six).