Venus Williams 2007 US Open 129 Mph or 208 km/h
Ivo Karlovic
Andy Roddick aka A-Rod - 155 MPH. He did this in 2004 during a Davis Cup match with Vladimir Voltchkov of Russia
Venus Williams has the fastest recorded serve in women's tennis at 127 mph. Other big women's servers include Serena Williams, Sabine Lisicki, and Brenda Schultz-McCarthy.
Mark Phillapousis