Novak Djokovic's American swing began with a hard-fought two-set win over Thomas Bellucci at the Rogers Cup.
World number one Novak Djokovic cleared his first hurdle - Thomaz Bellucci - at the Rogers Cup in Montreal.
Djokovic surpassed his Brazilian opponent 6-3 7-6 (7-4) at the ATP 1000 event in Canada, unbroken despite facing five break points.
The top-seeded Serbian struggled to stave off Bellucci early, the challenger earning a break point in the opening game - and two more in the fifth - only for Djokovic to stay in front.
Bellucci kept Djokovic at bay with a tight hold in the sixth game, but he could not escape a 0-40 hole in game eight - the nine-time major winner breaking at the third time of asking.
In his fourth career contest against Djokovic, Bellucci found his range in the second set - the lefty moving within two points of the set in the 12th game.
Down 15-30 and missing his first serve, Djokovic was typically defiant to escape the trouble and grab a 4-2 tie-break lead by the change of ends - and he never relinquished the advantage to remain unbeaten against the world number 33.