'H is for haircut, M is for Mirza' - The A-Z of WTA Finals in Singapore
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W is for winning streak. Serena Williams' winning streak of 16 matches at the tournament ended in 2014. That was the second longest winning run in the history of the WTA Finals, behind only the 21 matches in a row won by Martina Navratilova. (Getty)
Singapore hosts its fifth WTA Finals this week. Here we take a fond and fun look back on memorable moments from the previous four years before the move to Shenzhen.