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Pat Sullivan, Associated Press
Houston Astros' Carlos Lee, left, rounds third base, greeted by coach Dave Clark, on a two-run home run against the Los Angeles Dodgers in the first inning of a baseball game Sunday, April 22, 2012, in Houston.

HOUSTON — Jordan Schafer hit his first career grand slam, Carlos Lee homered and Wandy Rodriguez pitched three-hit ball through seven innings Sunday as the Houston Astros avoided a sweep with a 12-0 romp over the Los Angeles Dodgers.

Rodriguez (1-2) struck out six and walked three to get his first win of the season and lower his ERA to 1.42. Fernando Rodriguez and Brandon Lyon pitched an inning each to complete the shutout, which was the first of the year for Los Angeles.

Lee got things going with his two-run shot to left field in the first inning. Schafer's slam came an inning later and was just the second career grand slam Chad Billingsley (2-1) has allowed in his seven-year career and the first since 2008.