HOUSTON -- Neither pitching staff was impressive on Monday, but Carlos Quentin's 10th-inning RBI double gave the Padres enough to outlast the Astros, 8-7, at Minute Maid Park.
With one out in the 10th, Chase Headley drew a walk against Astros reliever Brandon Lyon and stole second base. Quentin drove Lyon's seventh pitch -- a 3-2 offering -- into right-center field, scoring Headley easily.
Closer Huston Street came on for the bottom half of the inning. He walked Brian Bogusevic with two outs, but got Chris Johnson to pop up for the third out. Street has 11 saves in 11 chances for the Padres.
Headley said he knew he wanted to try to steal second base in the top of the inning, but also didn't want to go too early in the count. That would give the Astros an opportunity to intentionally walk Quentin.
"So once he got to 2-2, I looked over at [Padres manager Bud Black] and he kind of gave me a nod," Headley said. "He wasn't giving me the sign, but I wanted to know if he was OK with it and he just kind of gave me eye contact. I knew I had it."
Headley, who only reached base in the 10th, said the stolen base probably wouldn't have mattered much in the end. Quentin's double bounced to the outfield wall, giving Headley ample time to score.
"I probably would have scored from first with these blazing wheels that I have," Headley said.
Black said he hopes Quentin's 2-for-5 night at the plate will give him some confidence going forward. Quentin entered the game on an 0-for-14 skid.
"The last number of games for Carlos, he's just been a tick off, so hopefully, two hits tonight, hard line drives up the middle the other way, gets him going again," Black said. "That was a huge hit."
The Astros led 6-5 heading into the eighth inning. Jesus Guzman, playing first base for the injured Yonder Alonso, took a low curveball from reliever Fernando Rodriguez over the left-field wall with two outs and Cameron Maybin on second, boosting the Padres to a 7-6 lead. It was Guzman's second homer of the season.
"I just tried to put the ball in play and tried to make good contact and drive in the run," Guzman said. "It was very important in the eighth."
Bogusevic and Johnson struck out against Luke Gregerson to open the bottom half of the eighth. With two outs, Jason Castro hit a solo home run down the right-field line to knot the score at 7.
Pinch-hitter Mark Kotsay singled in the ninth, but fellow pinch-hitter Will Venable grounded out to second for the third out. The Astros went down in order against reliever Dale Thayer, sending the game to extra innings.
Neither Astros starter Wandy Rodriguez nor Padres starter Ross Ohlendorf were able to silence the opposition's bats in the first few innings. The Padres scored four in the second and one in the third off Wandy Rodriguez, who settled down to retire 11 of the next 12 batters he faced.
Ohlendorf gave up solo homers in the first inning to Brian Bixler and Carlos Lee. The Astros also added runs in the second, fourth and fifth to grab a 6-5 lead heading into the seventh.
Making his second start for the Padres, Ohlendorf lasted 3 2/3 innings, giving up five runs on eight hits. He walked four and struck out four.
"Ross hung in there," Black said. "It was a battle for him, no doubt. But he got out of it a little bit."
Reliever Brad Boxberger went 1 1/3 innings, giving up an unearned run. Brad Brach threw two scoreless innings, handing the ball to Gregerson.
"As ugly as it was at times on the mound, at times it was pretty good," Black said. "We made some pitches."
The Astros certainly had their opportunities to score more than seven runs, leaving 13 runners on base. They left the bases loaded in the second and third innings and left two runners on in the sixth.
"They're one hit away from extending a lead or breaking it open or really getting the momentum on their side," Black said.
Manager Brad Mills wondered if the Astros were trying too hard with runners on base.
"There were a lot of missed opportunities," Mills said. "That was a tough one, because we had those opportunities to score and just didn't come through for us."
The Padres have scored eight or more runs twice in the last four games after going 24 games without scoring more than seven.
"We still [have] a half of baseball left, and I think we're seeing some good things offensively moving forward," Black said. "There's still some things we have to improve on, there's no doubt about it."
Clark Goble is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.