American John Isner and German Tommy Haas were second-round winners Wednesday at the SAP Open.
The second-seeded Isner outlasted Canadian Vasek Pospisil 7-6 (7-3), 2-6, 6-3, while the fourth-seeded Haas posted a 6-3, 6-1 victory over Canadian Jesse Levine.
Haas, who reached the semifinals at this event in 2005, has yet to drop a set in four lifetime meetings with Levine.
The opening round also concluded on Wednesday, with a pair of Americans advancing.
Michael Russell topped qualifier Donald Young 6-3, 7-5 in an all-American clash, while wild card Steve Johnson saved two match points in his 6-7 (2-7), 6-4, 7-6 (8-6) win over 2007 finalist Ivo Karlovic.
In other first-round action, Colombian Alejandro Falla dismissed Italian Flavio Cipolla 7-6 (7-1), 7-6 (12-10) and Aussie Matthew Ebden drove out South African qualifier Rik De Voest 6-2, 7-5,
The 2013 San Jose titlist will collect $98,700.