Novak beat Andy Murray 3-6, 6-1, 6-2, 6-4 to complete the career Grand Slam, and became just the eighth man to accomplish the feat.
The second Grand Slam of the season, the Roland Garros, is taking place in Paris, from May 22 to June 5, 2016.
After winning Doha, the Australian Open and the first two Masters events in 2016, Novak is full of confidence ahead of the European clay-court swing.
The world no.1 claimed a record fourth BNP Paribas Masters title on Sunday with a 6-2, 6-4 victory over no.2 seed Andy Murray.
Nole came up against his toughest test this week, but prevailed to clinch a 7-6 (3), 7-6 (8) victory in two hours and seven minutes.