Novak Djokovic began his French Open title defence with a solid if not spectacular victory over home hope Pierre-Hugues Herbert.

Serbia's Djokovic, 37, upped his level when it mattered to win 6-4 7-6 (7-3) 6-4 in Tuesday's night session at Roland Garros.

The 24-time Grand Slam champion will take sole ownership of the record of most major titles with a fourth victory on the Paris clay.

But he has come into the event in uncertain form.

Djokovic has endured a turbulent season, having been far from his lofty heights and not yet reaching a final.

Playing in Geneva last week was a sign he wanted to build rhythm and confidence before heading to the French Open, saying when he arrived that he had "low expectations but high hopes".

Therefore, it was intriguing to see how Djokovic would look against 142nd-ranked wildcard Herbert.

Djokovic's movement at the baseline did not always look comfortable and lacked some sharpness in his serving.

However, he generally returned well and was still able to pick his moments to strike - most notably in a commanding tie-break.

This year, Djokovic has appeared to lack some of the fire which has often fuelled his success but his demonstrative celebrations as he clinched the two-set lead indicated his pleasure.

Chances were rare in the third set before he piled on the pressure again in what proved to be the final game.

A stunning winner at deuce teed up a first match point and Herbert blinked to hand it over with a double fault.

More to follow.