Novak Djokovic got his tilt at a record-breaking 25th Grand Slam title off to a solid start on Tuesday as the Serb beat Mackenzie McDonald 6-3, 6-3, 6-3 in the first round of the French Open. 

Fresh off claiming his 100th tour title at Geneva last weekend, Djokovic booked his place in the round of 64 at Roland Garros with a straight-sets win over his 98th-ranked American opponent in under two hours.