'I'm not perfect,' says Djokovic after losing cool at Italian Open

Tennis - ATP Masters 1000 - Italian Open - Foro Italico, Rome, Italy - September 19, 2020 Serbia's Novak Djokovic during his quarter final match against Germany's Dominik Koepfer Pool via REUTERS/Angelo Carconi

(Reuters) - Less than two weeks after being disqualified from the U.S. Open, Novak Djokovic's frustration boiled over once again as he smashed his racket in a fit of rage during his 6-3 4-6 6-3 win over Dominik Koepfer in the Italian Open quarter-finals on Saturday.

The top-ranked Serb was broken to love in the sixth game of the second set following which he threw his racket on the ground, drawing a warning from the chair umpire.