It's not all about offense - and the WTA's stars in Singapore are also some of the quickest defenders in the game.
Which WTA player is the most athletic? We asked the Top 8 to make their picks - and now it’s time for you to cast your vote!
Caroline Wozniacki's multi-sport exploits earned her the respect of Simona Halep, who recalled the Dane's success at the New York City Marathon in 2014.
"A lot of girls are running pretty well," added Karolina Pliskova -- but which player is the toughest for the Czech to hit a winner against?
Watch the video below to find out!
Now it's your turn - cast your vote for the WTA player with the best wheels: do you agree with the WTA's best and choose Caroline Wozniacki or Simona Halep? Or, will fellow Singapore stars Elina Svitolina or Venus Williams earn your vote?