Roscoe Tanner: 153 mph
1978 Palm Springs final
Tanner's strong left-handed serve earned him the nickname "The Rocket." His 153 mph serve was the fastest ever recorded in tournament competition until Roddick hit 155 mph 26 years later. Tanner shares the record for the third-fastest serve with Karlović (2007 Nottingham Open) and Roddick (2004 Queen's Club).