Querrey moves into 2nd round

"First few games I was struggling, but I know he's had some problems with his back."

Eighth-seeded Xavier Malisse of Belgium, a two-time past champion here, won his first-round match over Alejandro Falla of Colombia 6-3, 6-3.

The 50th-ranked Malisse, who has reached the quarterfinals at the Auckland and San Jose tournaments this year, has beaten the 59th-ranked Falla all four times they've played.

Malisse has a 26-10 record at this tournament.

The 109th-ranked Ernests Gulbis of Latvia is the 2010 Delray Beach champion. This year, Gulbis has had to come through qualifying to reach the main draw this year.

Gulbis defeated Denys Molchanov of the Ukraine 6-7 (4), 7-5, 6-4 to qualify on Monday.