Granollers defeated Mischa Zverev 6-4, 6-2 without facing a break point. Granollers lost just 12 points in nine games serving. He posted three breaks, two in controlling the second set.
Radek Stepanek edged past Seppi 7-6 (8-6), 4-6, 7-6 (9-7) in a match that took nearly 3 hours. Seppi dropped serve just twice but fell in the extended tiebreakers. Stepanek improved to 4-0 lifetime against Seppi but only one of the matches finished in straight sets.
Also Tuesday, Lukas Lacko stopped Konstantin Kravchuk 2-6, 6-2, 6-3; Viktor Troicki beat Benjamin Becker 6-2, 7-6 (8-6); Florian Mayer didn't allow a break-point opportunity in a 6-4, 6-4 win over Tim Smyczek; and Tommy Haas advanced when, after Haas went up 5-2 in the first set, Bernard Tomic retired.
Lacko advanced to a second-round match against top-seeded Rafael Nadal, who is coming off Monday's French Open championship.