Coco Gauff dropped the first set, but leaned on stellar range and sharp anticipation to edge fellow Madison Keys in an error-clogged All-American meeting Wednesday to reach her third French Open semifinal in four years.

French wild-card entry Lois Boisson upset Mirra Andreeva in front of a boisterous crowd to reach the semifinals of the French Open.

Coco Gauff overcame 10 double-faults and the first set she’s dropped in the tournament to beat Madison Keys 6-7 (6), 6-4, 6-1 at the French Open and reach the semifinals for the third time.