Stunned and somewhat upset A’s center fielder Chris Young waited for Robbie Grossman near second base late Wednesday night. The Bellaire High graduate wanted proof after the Astros’ rookie left fielder made a leaping grab at the wall to deny him a walk-off homer in the 10th inning.

Grossman was more than happy to oblige. He opened up his glove showed Young the ball and smiled. Carlos Corporan took care of the rest in the 11th inning hitting an RBI double to give the Astros a 2-1 victory before a crowd of 18278 at O.co Coliseum.

“He asked me to show him the ball when I got to second base” Grossman said. “I just showed him the ball.”

Astros rookie righthander Jarred Cosart’s six scoreless innings weren’t enough for him to earn the decision but Grossman and Corporan helped the Astros overcome their 22nd blown save of the season.

Four innings after Phil Humber blew the one-run lead he inherited in the seventh the Astros broke the 1-1 tie to move in position to complete a three-game sweep Thursday afternoon. The consecutive victories are the Astros’ first since they won four consecutive games from June 12-16.

After Jose Altuve hit a one-out single to left in the 11th Corporan hit his RBI double high off the left field wall. Altuve who has been plagued by a tender left quad sprinted home without much problem.

“After Mike (as in Jordan) Robbie Grossman that’s his nickname caught that ball we had to win that game” Corporan said. “It was unbelievable. It’s something amazing.”

Lucas Harrell who pitched a scoreless frame in the 10th earned the victory to improve to 6-13. Josh Fields overcame Eric Sogard’s leadoff double to secure his second save in the bottom of the 11th.

Chris Carter gave the Astros a 1-0 lead with a leadoff home run to left field in the seventh inning.

Cosart threw six scoreless innings while scattering three hits and one walk with four strikeouts. He had to settle for his fifth consecutive no-decision however.

A’s righthander Jarrod Parker countered with 8 1/3 dominant innings while holding the Astros to one run on eight hits with one walk and six strikeouts.

“Carter hit a big home run” Cosart said. “I thought Phil (Humber) made a good pitch. That’ just baseball they died it up. Grossman made a huge catch and Corp has swung a magic bat all year so it’s a pretty good way to write up a game.”

Cosart has given up only six runs (five earned) through 31 combined innings during his streak of five no-decisions.

“Cosart was outstanding again” Astros manager Bo Porter said. “Overpowering stuff. I felt like even that last inning he started to elevate the ball. When he starts elevating the ball that’s when you know that he’s getting tired a little bit.

“But I felt like he did a tremendous job of pitching out of some tight jams and really making good pitches when he had to.”