Williams is a longtime resident of Palm Beach Gardens while Opelka has lived in the Delray Beach/Boca Raton area since he was a teenager.

Well, well, well. Just when you thought the tennis world couldn’t get any more chaotic, Jannik Sinner finds himself scrambling for a new mixed doubles partner at the eleventh hour.

As the start of the US Open mixed doubles (August 19-20) approaches, many pairs have faced last-minute changes. Following the ...