I don't care who you are, you're going to choke in certain matches. You get to a point where your legs don't move and you can't take a deep breath. You start to hit the ball about a yard wide, instead of inches.
Source: In The New York Public Library Book of 20th Century American Quotations, by Stephen Donadio, 1992.
-- Arthur Ashe, (Jul 10 1943-1993), US tennis player, AIDS spokesperson; He was the first black player to win the men's singles at Wimbledon, 1975.