Valentin's homer off Jon Rauch (2-1) was set up by a misplay characteristic of the NL's worst team. Center fielder Nook Logan and right fielder Austin Kearns let Scott Hatteberg's fly drop for an RBI double ahead of Valentin's homer.
Jon Coutlangus (2-0) retired the four batters he faced and David Weathers finished for his ninth save in 10 chances.
Hatteberg homered and doubled twice, driving in four runs as the Reds overcame a six-run deficit. Ken Griffey Jr. added a solo homer, the 572nd of his career. Griffey is one behind Harmon Killebrew for eight place on the list.
Second baseman Brandon Phillips went 0-for-4, ending his hitting streak at 22 games. It was the longest streak in the NL this season and the longest by a Reds batter since 1996, when Hal Morris hit in 29 straight.
Diamondbacks 6, Rockies 5
At Phoenix, Carlos Quentin hit two homers and drove in a career-high five runs as Arizona rallied to win.
Chris Snyder went 3-for-3, and Tony Clark also homered for the Diamondbacks.
Quentin, who entered the game hitting .189, drove in the go-ahead run with a sacrifice fly in the eighth inning. Orlando Hudson led off with triple against Jeremy Affeldt (1-1) and Mark Reynolds and Stephen Drew walked to load the bases for Quentin, who flied out to deep center to make it 6-5.
Brad Hawpe homered for Colorado, which has lost six of its last eight to fall a season-high nine games under .500 (18-27).
Doug Slaten (2-0) earned the win with a scoreless eighth inning. Jose Valverde pitched the ninth for his 17th save in 19 chances.
RSS