Donna Vekic displayed sportsmanship during her second-round match against Naomi Osaka at the 2026 French Open. The Croatian player corrected an umpire's decision on a serve call in the opening game. Osaka went on to win and advance to the third round.
In the first game of the match, with the score at 30-15 for Osaka, a line judge called one of the Japanese player's serves out. The chair umpire inspected the mark and agreed with the call. Vekic then approached the umpire and stated that she believed the serve had landed in, requesting that Osaka receive a first serve instead.