Mackenzie McDonald received congratulatory messages from Coco Gauff, Ben Shelton, Sloane Stephens and others from the tennis world after announcing his engagement to partner Maria Mateas.

INDIAN WELLS, Calif.—Mackenzie McDonald is healthy again. Happy again, too. Two weeks ago, at the BNP Paribas Open, the soon-to-be 30-year-old won his first main-draw match at a Masters 1000 ...

Mackenzie McDonald is coming off a straight-set win over Milos Raonic, which was a nice way for the American to back up his dominant performance against Andrey Rublev in the previous round.