Aryna Sabalenka's heartfelt message to Marketa Vondrousova

Aryna Sabalenka was sad to see her would-be quarterfinal opponent bow out of the U.S. Open before their Tuesday match. Markéta Vondroušová withdrew from the Grand Slam with a knee injury that she did not want to exacerbate further. Sabalenka, the def... [1869 chars]