Top seed and world number one Novak Djokovic cruised into the French Open third round on Thursday and admitted it had been an emotional day playing for the first time in front of his four-year-old son.

Djokovic, bidding to become just the second man to hold all four Slams at the same time twice, cruised to a 6-1, 6-4, 6-3 win over Swiss lucky loser Henri Laaksonen.