Cilic's 33 Aces Put Him in 1st French Open Semi At Age 33

Croatia's Marin Cilic celebrates winning his quarterfinal match against Russia's Andrey Rublev in five sets, 5-7, 6-3, 6-4, 3-6, 7-6 (10-2), at the French Open tennis tournament in Roland Garros stadium in Paris, France, Wednesday, June 1, 2022. (AP Photo/Michel Euler)

Paris (AP) -- Marin Cilic is 33, nearly eight seasons past his one Grand Slam title at the 2014 U.S. Open — and, until Wednesday, more than four full years removed from his most recent trip to the semifinals of a major tournament.

If he keeps serving like this, there's no reason to think about quitting tennis anytime soon.