Novak Djokovic knew he would have to play his best to defeat Matteo Berrettini in a tricky first-round clash at the ATP 500 ...

DOHA, Qatar — Novak Djokovic was upset by Matteo Berrettini 7-6 (4), 6-2 on Tuesday at the Qatar Open in the Serb’s first match since exiting the Australian Open with a hamstring injury.

Crowd favourite and Grand Slam king Novak Djokovic of Serbia on Tuesday fell at the first hurdle when he was beaten by Matteo ... not without some late pressure in the final game. Berrettini ...