Bagwell hit the Houston Astros' fourth home run of the game Saturday night for a 5-4 victory over Florida.
"I guess we know why Bagwell walked six times Friday, huh?" Marlins manager John Boles said.
"In those situations, I don't see too many fastballs," Bagwell said. "It was nice."
The homer was Bagwell's 37th.
"This is why a team like Houston is in the playoff every year," Boles said. "They have a bunch of people you'd pay to see play."
The game took only 2 hours and 12 minutes, a sharp contrast to the five-hour, 44-minute marathon Friday that Houston won 6-4 in 16 innings. The Astros left no runners on base after stranding 20 Friday.
"Any time we can win in nine innings after 16 innings the night before, it's a fun game," Bagwell said.
Jose Lima, bidding to become the National League's first 17-game winner, took a four-hitter and a 4-1 lead into the eighth, but the Marlins rallied to tie the game.
Houston rookie Glen Barker hit his first major-league home run in the seventh. Carl Everett and Bill Spiershomered for the Astros. All three homers came against knuckleballer Dennis Springer.
"I don't think he has much faith in his knuckleball," Everett said. "They go a long way when you hit them."
Houston improved to 5-0 in Miami this year despite blowing a lead for the second night in a row. With the bullpen depleted by Friday's marathon, Lima couldn't get through the eighth.
Florida pinch-hitter Mark Kotsay started the inning with a bunt single, Luis Castillo singled and Bruce Aven hit an two-out RBI double. Kevin Millar walked, and Todd Dunwoody's two-run triple made the score 4-4.
Lima was charged with four runs in 7 2-3 innings.
"I'm not going to complain about his performance," manager Larry Dierker said. "He saved the bullpen, but wasn't able to get the last guy out."
Dennis Springer allowed four runs in eight innings. He remained winless in six starts since shutting out Atlanta on July 21.
Spiers homered in the fourth to give Houston a 1-0 lead, but Danny Bautista tied the game in the bottom of the inning with a 430-foot homer to center.
After Barker homered, Bagwell singled and Everett hit a two-run homer, his 19th.
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