Roger Federer thinks Serena "went too far" during US Open final

Roger Federer says Serena Williams "went too far" in US Open final. Williams got a code violation for coaching, a penalty point for racquet abuse and finally, a game penalty for calling the referee a "liar" and a "thief". "I feel like Serena should have walked away," Federer told Sunday Times. "She did, but she went too far. She should have walked earlier." "The umpire maybe should not have pushed her there. It's unfortunate, but an incredible case study." he added. 37-year-old Federer lost to Novak Djokovic in Rolex Paris Masters semifinals.

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