Larry Dierker started the game for Houston, but left after two innings with (I guess) an injury. He was replaced by Mike Cosgrove, who threw 6 1/3 scoreless innings, allowing three hits and three walks while striking out three. Ken Forsch picked up the save with 2/3 innings at the end of the game.
Lee May and Cesar Cedeno were the two leading Houston hitters, as May was 1 for 3 with a solo home run and a walk. Cedeno was 1 for 4 with a double, an RBI and a run scored. Greg Gross was 1 for 3 and scored a run while Doug Rader was 0 for 1 with two walks.
Gross led off the top of the sixth, trailing the Padres 1-0, with a single. Roger Metzger sacrificed him over to second before Cedeno's double to left field scored Gross and tied the game. Cedeno went to third on the thrown home and scored when Bob Watson hit a sacrifice fly to right field. May followed with his solo shot, which gave the Astros the lead for good.
Here's the graphic replay of the game, thanks to Back to Baseball.