MARTA KOSTYUK

Defending champion Naomi Osaka didn’t make it to a much-anticipated fourth-round contest against top-ranked Ash Barty at the Australian Open.

Emma Raducanu came down to earth in her first tournament since her surprising U.S. Open victory, losing in straight sets to Aliaksandra Sasnovich at the BNP Paribas Open.

Novak Djokovic has started his bid to make history at the U.S. Open with a four-set victory over Danish teenager Holger Vitus Nodskov Rune.

American 17-year-old Coco Gauff completely overwhelmed Ons Jabeur 6-3, 6-1 at the French Open to become the youngest woman to reach the quarterfinals at any Grand Slam tournament in 15 years.

Novak Djokovic has rallied from a two-set deficit to reach the French Open quarterfinals for the record 15th time.

Defending champion Iga Swiatek is into the quarterfinals of the French Open after beating unseeded 18-year-old Marta Kostyuk of Ukraine 6-3, 6-4 in the fourth round.

Novak Djokovic has not been tested in a set, let alone a match, at this year's French Open.

Serena Williams is a winner in the first scheduled night session in French Open history.

NEW YORK The Latest on the U.S. Open tennis tournament (all times local):11:10 a.m. Play is underway in third-round matches on Day 5 at the U.S. Open. Past champions Naomi Osaka and Novak Djokovic are among those scheduled to play in Arthur Ashe Stadium later Friday. Osaka will face Marta Kostyuk to begin the day session in the tournaments main arena. The top-seeded Djokovic will bring a 28-match winning streak, including 25-0 this season, into his night match against Jan-Lennard Struff.

Naomi Osaka, of Japan, serves to Marta Kostyuk, of the Ukraine, during the third round of the US Open tennis championships, Friday, Sept. 4, 2020, in New York. Another past U.S. Open champion moving into the fourth round Friday was 2016 titlist Angelique Kerber, who defeated 20-year-old American Ann Li 6-3, 6-4. Kerbers next opponent is another American, 28th-seeded Jennifer Brady, a 6-3, 6-3 winner against Caroline Garcia. The key moment: Kostyuk held five break points that could have given her a 3-1 lead in the final set. Each time on court during the tournament, Osaka is wearing a different mask in memory of a victim of racial injustice.