If a career in tennis suddenly stops working for the likes of Novak Djokovic and Serena Williams, perhaps they'd find some success on the football field.
Eugenie Bouchard? Simona Halep? Caroline Wozniacki? Agnieszka Radwanska? Sloane Stephens? Pam Shriver and Brad Gilbert break down the chances of five players hoping to win their first major at the US Open.
The era of specialists is over, and now tennis players must master all three surfaces to thrive on tour. Some, though, still have a lot to learn when it comes to the grass courts of Wimbledon.