MIAMI (AP) Once Sammy Sosa finished wrecking them, the Colorado Rockies found that they really do have some arms.

Jason Jennings became the winningest rookie in team history, combining with three others to pitch the Rockies past A.J. Burnett and the Florida Marlins 1-0 Monday night.

After allowing 27 runs to the Cubs - including 14 RBIs and four homers to Sosa - on Saturday and Sunday, the Rockies were in need of some solid pitching.

Jennings (13-5) delivered, surpassing Armando Reynoso's franchise record of 12 wins by a rookie in 1993.

"That's not something I was thinking about, but now that it's happened, I'd like to go get some more wins," Jennings said.

Relievers Justin Speier, Todd Jones and Jose Jimenez closed out the game for the Rockies.

"We needed a clean game on the mound because of the way we took a beating in those last two games," Colorado manager Clint Hurdle said. "What Jason did really helped, and it was nice to see our bullpen come through like that."

Burnett (11-9) lost despite pitching a four-hitter and striking out nine. He leads the NL with six complete games.

Just as Jennings gave the Rockies a boost, Burnett did the same for Florida, which was tagged for 18 runs in its last two games against Arizona on Saturday and Sunday.

It just wasn't enough.

"I had pretty good stuff tonight," Burnett said. "I was locating and keeping them off-balance. When you're pitching well, you want to stay in the game. You never want to lose a game like this, but that's part of the game. You can't get too frustrated by it."

The only run scored in the fourth. Larry Walker drew a one-out walk and scored on Todd Helton's double to left field.

"I was trying to hit a fastball," Helton said. "With Burnett, that's about all you can do is sit back and wait for one because he throws so hard. It wasn't the best swing, but it did for me what I had to do."

Jimenez pitched the ninth to earn his 31st save in 34 chances. He retired Luis Castillo on a grounder with a runner on third to end it.

Jennings won his third straight start. He worked 5 2-3 innings, allowing four hits while striking out five.

Jennings was lifted after the Marlins loaded the bases in the sixth. Speier relieved and retired Eric Owens on a popup.

"He used to take giving up hits personally, but we're getting him to see that he just needs to get a lot of groundballs," Hurdle said.

"If he keeps doing that, he's going to pitch for a long time in this league."

Burnett dropped his second start in a row after winning three straight.

"We couldn't ask anything more from the kid," Florida manager Jeff Torborg said.

Helton hit a pair of doubles, but also was twice thrown out on the bases.

In the second inning, Helton was cut down by right fielder Juan Encarnacion while trying to advance to third on a fly ball. In the fourth, Helton was thrown out by Owens when he tried to score from second on Sandy Alomar's single to left field.

"Two more times and I would have been thrown out for the cycle," Helton said.

Notes: The Marlins were 1-5 on their recent road trip and were swept over the weekend by the Diamondbacks. ... Marlins C Mike Redmond, batting third for the first time this season, singled in his first two at-bats and finished 2-for-3. ... The game drew 5,091 fans, second-lowest this year at Pro Player Stadium. ... Speier has stranded 23 of 24 inherited runners, giving him a 96 percent success rate, tops in the majors.

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