Dayana Yastremska made headlines Tuesday by completing one of the biggest upsets at Wimbledon with her first-round victory in straight sets over No. 2 seed Coco Gauff. But the unseeded Ukrainian tennis player isn’t a complete unknown.

Coco Gauff became just the third woman in the Open era to lose in the first round at Wimbledon right after winning the championship at the French Open, eliminated 7-6 (3), 6-1 by unseeded Dayana Yastremska of Ukraine on Tuesday night.