Two Japanese boxers have died days after suffering brain injuries in separate fights on the same card, boxing associations and media reports said.
World number one Aryna Sabalenka saved 12 break points to survive her Cincinnati opener against Czech Marketa Vondrousova 7-5 6-1 on Saturday, as the men's defending champion Jannik Sinner cruised past Colombian qualifier Daniel Galan 6-1 6-1.