The world No. 2 stayed loose in the tightest moments to knock the Australian Open champion out of Roland Garros.

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.

In a contest filled with plenty of mistakes, it was Coco Gauff who emerged to grab eight of the last nine games for a victory over madison Keys and a third trip to the semifinals at Roland-Garros.