The two-time champion is mulling over a big decision.
Djokovic will join Federer on Team Europe, with Del Potro joining Nick Kyrgios on Team World.
The American had a pop star moment after his exhibition match with Juan Martin del Potro at Boodles.
The Aussie had some kind words for Halep on social media when all was said and done.
Australian Open champion supports seeds for Serena, Vika.
The two-time Wimbledon champion hopes to be in good health for Wimbledon next week.
World No. 32 isn't happy being bumped from a Wimbledon seed.
