Coco Gauff is a tennis star who is seeded No. 2 at Wimbledon and already owns two Grand Slam titles at age 21.

Coco Gauff’s first match following her French Open title did not go as planned, having lost to the eventual finalist Wang Xinyu at the Berlin Open. Her first match on grass of the season, her 6-3, 6-3 defeat underlined some of the big issues she might face on this surface across the next few weeks.

LONDON — Coco Gauff and Carlos Alcaraz are helping usher in a new era for tennis. With Wimbledon beginning Monday, the sport’s most recent Grand Slam champions are Gauff, a 21-year-old American, and Alcaraz,