Chicago ? The Cincinnati Reds showed off their power against the slumping Chicago Cubs.

Ken Griffey Jr. hit a three-run homer, Adam Dunn had a two-run drive, and Austin Kearns added a solo shot, leading the Reds to a 9-4 victory over the Cubs, who have lost six straight games.

Javier Valentin drove in three runs, including two with a bases-loaded double, as the Reds staked Brandon Claussen (7-8) to a 9-0 lead.

“We got some big hits from Dunn and Griffey,” Reds interim manager Jerry Narron said. “Griff’s big three-run homer was huge for us at the time of the ballgame … I like the way we played.”

Griffey’s homer, his 24th, capped a four-run rally in the sixth. It was his 18th in 61 games since May 25. He also doubled.

Dunn’s shot in the third was his 33rd and tied him for second in the NL with Chicago’s Derrek Lee. It was Dunn’s 10th homer in 24 games since the All-Star break. He went 2-for-5 and has 27 hits in his last 83 at-bats.

Claussen pitched seven shutout innings, allowing only a double to Todd Walker and a single to Matt Murton while striking out three and walking five. He didn’t give up a hit after the second.

“Hey man, a 9-spot,” Claussen said of his offensive support. “That’s like getting 5-under par on the back nine rolling up 18. The only thing I was disappointed with is that I did walk some guys.”

The left-hander has won his last three starts after dropping four straight decisions.

Cincinnati's Adam Dunn (44) celebrates his two-run home run against the Chicago Cubs with teammate Ken Griffey Jr. The Reds routed the Cubs, 9-4, Monday in Chicago.

“He’s had some tough luck against these guys, so it’s good to see him come out and pitch the way he did,” Kearns said. “Any time you can do that here against a lineup that can hit the ball out of the ballpark like them, that’s impressive.”

Brian Shackelford pitched a scoreless eighth before the Cubs scored four runs in the ninth off Randy Keisler.

The Cubs fell to 27-27 at Wrigley Field and are 61â2 games behind Houston in the NL wild-card race. At 54-58, Chicago is in fourth place in the NL Central, four games ahead of fifth-place Cincinnati.

“We’re just in a funk, and we can’t seem to find a way out of it,” said Walker, who had three of Chicago’s nine hits. “The last inning, we bust out of it and hopefully that will carry over.”

Chicago starter Jerome Williams (3-5) allowed seven runs on seven hits and two walks in 51â3 innings. The right-hander is 0-3 in three starts at Wrigley Field since being acquired from San Francisco on May 28.

Cubs starters have posted only two wins since July 19, a span of 19 games.

“We couldn’t get the ball down today,” Cubs manager Dusty Baker said. “The ball was up and the location wasn’t where he wanted it. Power hitters – when you get the ball up and over the heart of the plate – you’re going to get hurt.”

Rockies 4-5, Marlins 3-3

Denver – Danny Ardoin hit a tiebreaking two-run homer, Byung-Hyun Kim won for the first time in seven starts, and Colorado completed a doubleheader sweep with a 5-3 victory in the second game.

Ardoin broke a 3-all tie in the sixth with his third home run of the year. Ryan Shealy went 3-for-3 and drove in a run in Game 2 and was 5-for-8 with two RBIs in the doubleheader.

Kim (3-8) allowed three runs and five hits in six innings to win for the first time since June 24. Brian Fuentes pitched the ninth for his 20th save in 23 chances.

Ismael Valdez (1-1), who was 3-0 in his previous three starts against Colorado, allowed five runs and 10 hits in six innings.

According to the Elias Sports Bureau, Sunny Kim and Byung-Hyun Kim became the first players with the same last name to start each end of a doubleheader since brothers Gaylord and Jim Perry did it for Cleveland on June 22, 1974, at Boston.

In the first game, Dustan Mohr homered with two outs in the 11th inning off Valerio De Los Santos (1-1). Scott Dohman (1-1) pitched two scoreless innings to earn his first major-league victory.

Cardinals 8, Brewers 4

Milwaukee – Mark Grudzielanek homered and drove in a career-high five runs, leading St. Louis.

Grudzielanek also scored the go-ahead run on Abraham Nunez’s RBI single off Matt Wise (4-4) in the eighth inning that snapped a 4-all tie.

Grudzielanek, Nunez and Taguchi – the No. 5-7 hitters – combined to go 8-for-13 with all eight RBIs.