PITTSBURGH (AP) -Carlos Quentin's two-run single in the eighth inning finished off Arizona's franchise record-tying comeback, and the Diamondbacks rallied from six runs down with the help of Pittsburgh's ineffective bullpen for a 9-8 victory Saturday night.
Tony Clark's pinch-hit grand slam in the seventh tied it for Arizona.
The Diamondbacks, averaging 2.9 runs while previously going 6-10 this month, had only two previous six-run comebacks in their 10-season history - on May 2, 2006, against the Dodgers and Sept. 15, 1998, against the Giants.
Arizona's five relievers limited Pittsburgh to one run after starter Micah Owings left following 2 2-3 wild innings, with Doug Slaten (1-0) getting his first career victory with a scoreless seventh.
Jose Valverde finished up in the ninth, throwing only four pitches for his 15th save in 17 chances.
Mark Reynolds had three hits, including his first career homer, and Conor Jackson added a solo shot to start the five-run rally in the seventh.
Pirates starter Tom Gorzelanny held Arizona to two runs during another effective start. He also helped himself during the Pirates' biggest inning of the season with a two-run single that helped them to a 7-1 lead during a six-run third.

Top MLB Public Bets

MLB Top Stories

Thumbnail Opening 2018 World Series Odds The 2018 World Series opening odds have been released. Who is favored, who is the biggest challenger, and who is also in the mix?
Thumbnail Astros vs. Dodgers Pick Are the Houston Astros going to clinch their first-ever World Series title Wednesday night in Game 7 with an upset win at the Los Angeles Dodgers? Game time is...
Thumbnail Astros vs. Dodgers Pick Can the Houston Astros clinch their first-ever World Series title Tuesday night in Game 6 at the Los Angeles...
Thumbnail Dodgers vs. Astros Pick Are the Los Angeles Dodgers going to ride Clayton Kershaw to a victory over the host Houston Astros in a pivotal Game 5 of the World Series Sunday night? First pitch is at...
Thumbnail Dodgers vs. Astros Pick Are the Houston Astros going to win a third straight game over the visiting Los Angeles Dodgers Saturday night in Game 4 of the World Series? First pitch is at...

MLB Team Pages