Cubs catcher Geovany Soto was forced to leave Tuesday night's game against the Astros because of a sore right shoulder. Soto was the 2008 NL Rookie of the Year. "It's very tough," left fielder Alfonso Soriano said. "We lost the game and we lost Geo. I hope it's nothing serious and he comes back in one or two days." He will be re-examined on Wednesday, and manager Lou Piniella is holding out hope that he could return for the team's weekend series against Milwaukee.