The three-time Grand Slam champ's rep confirmed the engagement to CNBC.
"Maria Sharapova's agent Max Eisenbud has confirmed to me that she is engaged to the Lakers' Sasha Vujacic," sports reporter Darren Rovell Tweeted.
Vujacic, 26, popped the question to Sharpova, 23, Tuesday night at his Manhattan Beach, Calif. Home, reports Yahoo! Sports.
The couple were first spotted last November cozying up at a U2 concert in L.A. They have been dating for nearly a year.