Djokovic mugs Tiafoe in training!

Just when almost nobody thought Novak Djokovic would be able to compete at Wimbledon, the prognosis seems to be changing. Although it's still unclear whether he'll take part, recent signs are increasingly positive.

All smiles since his arrival in London, the Serb played his first post-operation training set. Hitting the ball with very decent intensity, the current world number 2 won the tie-break against Frances Tiafoe, also back from injury (30th).

Could he be a contender at Wimbledon? To be continued...