Rafael Nadal of Spain at the Montreal Masters
Image credit: Reuters
The seventh seed had a bye in the opening round, and at first was matched blow for blow by Ukraine's Sergiy Stakhovsky.
But after coming through a tie-break to claim the opening set, Nadal wrapped up the match in relative comfort to win 7-6(4) 6-3.
Next up Nadal will face Russia's Mikhail Youzhny, who beat ninth seed Gilles Simon 6-1 6-4.
Fourth seed Kei Nishikori, winner in Washington at the weekend, also made it safely through, beating Pablo Andujar of Spain 6-3 6-3.
Montreal Masters Round 2 Results
7-Rafa Nadal (Spain) beat Sergiy Stakhovsky (Ukraine) 7-6(4) 6-3
Jack Sock (U.S.) beat 14-Grigor Dimitrov (Bulgaria) 5-7 7-6(5) 7-5
Jeremy Chardy (France) beat Leonardo Mayer (Argentina) 4-6 7-6(4) 6-2
4-Kei Nishikori (Japan) beat Pablo Andujar (Spain) 6-3 6-3
Mikhail Youzhny (Russia) beat 9-Gilles Simon (France) 6-1 6-4
Stage 2, Brussels TT (28km)
Phillip Island, Australia