Maholm went 8-1/3 innings and gave up just four hits; he struck out six and walked one. Astros starter Bud Norris lasted six innings and was responsible for all four Cubs runs.
Chicago go the scoring started in the second inning with a solo home run from Luis Valbuena. Steve Clevenger hit a two-run shot in the fourth and Alfonso Soriano rounded out the scoring with a towering solo home run in the sixth.
For updates, stay tuned to SB Nation Chicago. For more in-depth coverage of this series, head over to Cubs blog Bleed Cubbie Blue and Astros blog Crawfish Boxes. For more from around Major League Baseball, visit Baseball Nation.