Croatia's 6' 10" Ivo Karlovic, ranked No. 239 at the time, struck a 156 mph serve in the fourth set of a doubles match against Germany in the 2011 Davis Cup, breaking Andy Roddick's previous record by one mph.
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Andy Roddick: 155 mph
Roddick may no longer hold the record for fastest serve, but he has been the most consistent, recording more 150-plus mph serves in his career than all other players combined.
3 of 7Leo Mason/Action Plus/Icon SMI
Roscoe Tanner: 153 mph
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).
4 of 7Wade Payne/Icon SMI
Joachim Johansson: 152 mph
Sweden's Johansson reached 152 mph in 2004 and then 150 mph at the 2011 Davis Cup.
5 of 7Ronaldo Schemidt/AFP/Getty Images
Milos Raonic: 152 mph
In addition to his 152-mph output, Canada's Raonic hit 150 mph at the Regions Morgan Keegan Championships in Memphis.
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Taylor Dent: 150 mph
Plagued by severe back problems throughout his career, Dent not only reached 150 mph in what would be his final season, but also set a record with the fastest serve ever recorded at Wimbledon (148 mph).
7 of 7AP
Greg Rusedski: 149 mph
Some contend that Rusedski held the record for fastest serve (briefly), not fellow-lefty Tanner, when he reached 149 mph in 1998, claiming the clocking equipment in 1978 was not accurate enough for Tanner's speed to be official.
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