It was the first match at the shortened, two-day tournament decided by a 10-point tiebreak.

Jannik Sinner pulled out of the U.S. Open mixed doubles tournament shortly before it began on Tuesday, a day after he quit in the first set of the Cincinnati Open final because he was feeling ill.

They needed a tiebreak to get through the second, but when it was over they had won two matches in 98 minutes and had collected $200,000 for making the semifinals.