DENVER -- Jason Marquis had heard all the stories about the ways pitchers have attempted to adjust their games to succeed at Coors Field. The Chicago Cubs right-hander wasn't interested in adjusting anything.
Marquis held the Rockies to five hits and added a key double as the Cubs beat the Colorado Rockies 6-2 on Friday night.
"I just try to follow my game plan no matter what stadium I'm pitching in," Marquis said. "I used sinkers down in the zone, and tried to get hitters to hit ground balls."
The Cubs won for the second consecutive night at Coors Field and stayed a half-game behind the NL Central Division leading Milwaukee Brewers, who beat the Houston Astros 5-4 in extra innings.
Marquis (9-7) lasted 6 2/3 innings, allowing only an unearned run. He didn't walk a batter and struck out five to win his first road game since May 2. He was 0-4 in his previous seven road starts since beating the Pirates 7-1 in Pittsburgh.
Marquis had only one disturbing moment in the game. When he hit Colorado's Jeff Baker with two out in the seventh inning.
"I think he was a little shaken up after hitting Baker," Lou Piniella said of Marquis. "It's a shame. I hope the kid is okay."
Colorado manager Clint Hurdle said there was little to report on the Baker's condition.
"Baker was taken to the hospital and was listed as having a mild concussion," Hurdle said. "That's all the information we will provide tonight."
Marquis left the game with two outs in the seventh inning after hitting Jeff Baker above the left eye with a pitch. Baker left the game and Marquis was replaced by Carlos Marmol, who walked pinch-hitter Ryan Spilborghs to load the bases, but fanned Willy Taveras to end the inning.
"I called over and spoke to their assistant trainer to see how Baker was doing," Marquis said. "I asked them to call me tonight when they get the results back, just so that I can rest easy tonight."
The news on the field for Hurdle and the Rockies wasn't any more encouraging.
Jacque Jones went 3-for-5 with a homer and two RBI. Matt Murton was also 3-for-5, and hit a ninth-inning homer off Manuel Corpas. Jason Kendall went 3-for-4, and provided a two-run single for the Cubs, who arrived in Denver on a four-game losing streak.
"I knew Jones was pretty hot coming in here," Cook said. "I didn't do anything to slow him down."
Jones has nine hits in his last 14 at-bats, and six RBI in his last two games.
The Rockies had been 21-5 at home since June 2, the best mark in baseball during that span, before looking flat in consecutive losses to the Cubs.
The Cubs defeated Aaron Cook (8-7) for the first time in three starts. Cook was roughed up for five runs and eight hits over six innings and lost for the first time in six starts.
He was 3-0 with a 2.31 ERA over his previous five starts and last lost on July 8 against Philadelphia.
The Cubs scored three unearned runs in the third inning to lead 3-0. After Jones reached on a bunt single, first baseman Baker threw the ball into left field attempting to get Jones at second base. One out later Mark DeRosa walked to load the bases, Mike Fontenot drove in a run with a ground ball and Kendall singled to center to score two runs.
Marquis doubled to center to open the fourth inning and scored when Jones doubled to the wall in left to make it 4-0.
Jones hit his third homer of the season, a solo shot into the Rockies bullpen on an 0-1 count in the sixth inning.
"The pitch for the home run to Jones and the pitch to Marquis were the only pitches I would have wanted back," Cook said.
- 3B Aramis Ramirez joined the Cubs in Denver on Friday after having his right wrist examined in Chicago.
- Chicago has at least one extra base hit in 50 of its last 51 games.
- RHP Rodrigo Lopez will have surgery on Aug. 22 in Los Angeles to repair a torn right flexor tendon.
- The Rockies had not lost consecutive home games since dropping three in a row May-30-June 1.
- Murton has four homers on the season, two in the last two games.