Serving for the match at 5-3 in the fifth, Sock pulled an easy forehand wide and was broken. But unlike Fritz, he knew that he would be able to create more opportunities to make that shot.

Sock brought his familiar tennis skills—his speed, his forehand, his hands, his closing ability—right into the pickleball kitchen.

Cleanly, too. Sock hit 30 winners and made only 18 unforced errors (10 fewer than Dimitrov) and saved all six break points he faced. Pounding serves at up to 136 mph (220 kph), leaping into his ...

Jack Sock became the first American to reach the last four of the ATP Finals for 10 years when he stunned world number three Alexander Zverev in a firecracker of a match on Thursday. The world ...