Eric Munson hit an RBI single in the bottom half of the 10th inning in the Houston Astros' 2-1 victory over the Chicago Cubs.
It was the Cubs' first game following Alfonso Soriano's leg injury. Soriano is out 4 to 6 weeks with a tore quadriceps muscle.
Ty Wigginton's walk off Michael Wuertz started the Astros rally. After a sacrifice, strikeout and a wild pitch, Munson singled to right.
Ryan Theriot doubled twice for the Cubs, who've lost 4 of 5.