Two episodes at this year's U.S. Open have shown that not every postmatch handshake in tennis goes well.

Four-time Grand Slam champion Naomi Osaka has lost in the first round of a second consecutive major tournament.

Rising star Carlos Alcaraz has saved a match point in the fourth set and erased an early deficit in the fifth to overcome Albert Ramos-Vinolas 6-1, 6-7 (7), 5-7, 7-6 (2), 6-4 at the French Open.

Sloane Stephens has used her big forehand to take eight of the last 10 games and eliminate 17-year-old Coco Gauff in an all-American matchup at the U.S. Open.

Coco Gauff has won in her return to Centre Court at Wimbledon.