Novak Djokovic dropped a bombshell about fellow tennis icon Serena Williams after advancing to the second round of the US Open. It’s been three years since Williams ended her career at her home Grand Slam tournament, and Djokovic wants to see her back on the circuit.

Novak Djokovic thinks he came up with a way to get Serena Williams back on the tennis tour: Dare her to do it.

The tennis world surely misses Serena Williams, the multiple Grand Slam champion who is no longer part of the WTA circuit. Still, she has remained highly visible, often stealing th