Andre Agassi (born April 29, 1970, Las Vegas, Nevada, U.S.) American professional tennis player who won eight Grand Slam titles as well as the “career Grand Slam” for winning each of the four major tennis tournaments—Wimbledon, the Australian Open, the French Open, and the U.S. Open—at least once.. By age 2 he could serve a tennis ball on a full court.
https://www.britannica.com/biography/Andre-Agassi