Wimbledon 2019: Novak Djokovic reveals what he has to be careful about against Roger Federer in the finals

Novak Djokovic highlighted exactly what he has to be wary of against Roger Federer when he faces him in the Wimbledon 2019 finals. The Serb has had it relatively smooth sailing up till this point at Wimbledon 2019, not having come up against anyone in the top 20. Federer, on the other hand, had to …