Shortstop Nomar Garciaparra left Wednesday night's game against Houston in the fifth inning with stiffness in his lower back. He hit his second homer of the season in the fourth. But in the bottom of the inning, he had to stretch to take a feed for a possible double play from first baseman Derrek Lee. Garciaparra's throw to first was wide left and rolled into the camera well. He was charged with a two-base error as Chicago's lead was cut to 3-2. Garciaparra stayed in the field for the rest of the inning and then left the game. Garciaparra played in 26 games after tearing his left groin running out of the batter's box in St. Louis on April 20. He has made 10 starts since returning Aug. 5.