The second set began with five breaks, the American releasing her grip a little and committing a double fault twice to return, at 1-0 then at 2-1, the service games she had just stolen from Sabalenka. But there were clearly details that were going wrong in the American’s mechanics. Mainly on his gesture of service, which was going to begin to betray her in an unreasonable way. She went so far as to lead 4-2 but could not resist her drop in level, combined with the grinta of Sabalenka, who constantly worked to put even more intensity on all her strikes.