Aryna Sabalenka's Cincinnati Open title defense is over. The World No. 1 was eliminated by Elena Rybakina in the quarterfinals Aug. 15.

Twice down break point while two games from victory against world No. 1 Aryna Sabalenka, Elena Rybakina stepped up to serve. She had let victory slip through her fingers against Sabalenka two months earlier in Berlin, squandering four consecutive match points in a third-set tiebreak. She had suffered close losses from winning positions all year.

It's been a busy year for women's No. 1 tennis player Aryna Sabalenka. She's made deep runs in every grand slam event so far, reaching the final in the Australia Open and French Open and getting to the semifinal round at Wimbledon.