Defending champion Novak Djokovic shrugged off his recent troubles to sweep to his 93rd career win at the French Open on Tuesday, extending his run of first round Roland Garros victories to a perfect 20.

Djokovic, chasing a fourth title in Paris and record 25th Grand Slam triumph, came through against 142nd-ranked French wildcard Pierre-Hugues Herbert 6-4, 7-6 (7/3), 6-4.

The 37-year-old, who saw career-long rival and 14-time champion Rafael Nadal exit the tournament on Monday, had arrived under a cloud.