Naomi Osaka’s fitness for the Australian Open is in question after the four-time Grand Slam champion and former No. 1 ...

Osaka won the opening set 6-4 in Sunday's final, but was forced to retire hurt after taking a medical time out, handing the ...

Injury tripped up Opelka and Osaka at the finish line; Rybakina moved forward ... then back; Sabalenka survived a new Kudermetova; the U.S. won United Cup; and Gauff vs. Swiatek turned spicy, then icy ...