Coco Gauff of the United States lost 6-7, 2-6 to Croatia’s Donna Vekic in the Olympic women’s singles tournament, but the match was overshadowed by a controversial line call decision in the second set as Gauff was trying to stage a comeback.
The dispute led to an argument of several minutes during which Gauff said repeatedly that the point should have been replayed. “You have to understand this is not fair,” she said on the court before the match resumed.
Here’s what happened, the rules surrounding the incident, and why Gauff was so frustrated by the official decision.