File:Roger Federer serve in Wimbledon 2012.jpg - Wikimedia Commons
Roger Federer Serve Analysis - Tennis Serve Lesson - Top Tennis Training
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The Roger Federer Tennis Serve – Analysis of the Federer Serve - Tennis Instruction
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He neutralizes Roger Federer's serve like nobody else', says expert - nomisec
Is Roger Federer's serve underrated? Looking back at the Swiss' top 5 serving performances
Twitter 上的 Tennis TV:"Comparing Roger #Federer and Novak #Djokovic first serve placement in set one. #tennis #DDFTennis http://t.co/Zur0FXYaUR" / Twitter
Roger Federer Serve in Super Slow Motion - BNP Paribas 2013 - YouTube
Roger Federer Serve With No Racquet | Feel Tennis
Roger Federer Serve Slow Motion in Court Level View - Ultimate ATP Serve Technique - YouTube
Roger Federer's Serve Is A Hybrid Of Pete And Andre" - Andy Roddick - EssentiallySports
Roger Federer Serve With No Racquet | Feel Tennis
Federer serve in motion | Roger Federer's serve at around 6 … | Flickr