Eighth seed Nicolas Lapentti of Ecuador also moved into the second round with a 7-5, 6-1 victory over Irakli Labadze of Georgia. Lapentti has five career titles.
Italian Davide Sanguinetti had the biggest rout of the day, a 6-1, 6-1 pounding of German qualifier Daniel Elsner. Slovakian Dominik Hrbaty recorded a 6-1, 6-4 win over Frenchman Julien Benneteau.
France's Michael Llodra was the only qualifier to advance, defeating German Lars Burgsmuller, 6-3, 6-2.
England's Greg Rusedski held a 6-4, 3-1 lead over Swiss qualifier Stanislas Wawrinka when rain suspended play.
Three matches did not begin and will be played Wednesday. First prize of this hardcourt event is $52,000.