Coca-Cola International Premier Tennis League - Singapore: Day Two [Getty Images]

SINGAPORE - DECEMBER 03: Serena Williams of the Singapore Slammers smashes her racket in her match against Ana Ivanovic of the Indian Aces during the Coca-Cola International Premier Tennis League at the Singapore Sports Hub on December 3, 2014 in Singapore. (Photo by Clive Brunskill/Getty Images for IPTL 2014)

Getty Images Sport Clive Brunskill