Astros 2, A's 1 (11 innings)

OAKLAND, Calif. -- Houston Astros backup catcher Carlos Corporan is making a habit of coming through with big hits.

Two nights after breaking up Yu Darvish's no-hitter with an eighth-inning home run, Corporan produced an even more important hit Wednesday night, lifting the Astros to a 2-1 victory over the Oakland A's in 11 innings.

Jose Altuve started the winning rally with a one-out single off A's reliever Sean Doolittle (3-4), and Corporan followed with an RBI double off the left-center-field wall.

Astros right-hander Josh Fields gave up a leadoff double to Eric Sogard in the bottom of the 11th. Alberto Callaspo popped out to Fields on a failed bunt attempt, pinch hitter Jed Lowrie struck out looking, and Josh Reddick struck out swinging as Fields secured his second save of the season.

Lucas Harrell (6-13) pitched one scoreless inning to earn the win.

The A's suffered their second consecutive loss to the Astros and fell two games behind the first-place Texas Rangers in the American League West.

A's left fielder Chris Young nearly ended the game in the bottom of the 10th when he sent reliever Lucas Harrell's 3-2 pitch high and deep to left. However, Astros left fielder Robbie Gross made a leaping catch at the fence for the third out, robbing Young of a walk-off homer.

A's right-hander Jarrod Parker and Astros righty Jarred Cosart were locked in a pitching duel for most of the game. Both threw gems, but neither received a decision.

Cosart, who came to the Rangers from the Philadelphia Phillies in a July 2011 trade as part of a package for Hunter Pence, blanked the A's for six innings on three hits. He struck out four, walked one and lowered his ERA to 1.15. He received his fifth straight no-decision after winning his first major league start on July 12 at Tampa Bay.

Cosart made franchise history earlier this season when he became the first Astros pitcher to allow one or fewer earned runs while going six or more innings in each of his first four career starts. Now he's gone six starts without allowing more than two earned runs.

Parker allowed just one run on eight hits over 8 1/3 innings, keeping his six-game winning streak alive. He hasn't lost since May 22 at Texas. Parker struck out six and walked one, but his streak of allowing six or fewer hits ended at 16 starts.

Former A's first baseman Chris Carter broke up a scoreless game in the top of the seventh, crushing a leadoff home run to left field off Parker. Carter, who came to the Astros as part of a February trade for shortstop Jed Lowrie, hit Parker's first pitch, a 92 mph fastball, for his team-high 22nd home run of the season.

The A's answered with a run in the bottom of the seventh off Astros reliever Philip Humber, who was called up Tuesday from Triple-A Oklahoma City. After Yoenis Cespedes hit a leadoff single, Brandon Moss brought him home with a double to left-center, pulling the A's even.

Sogard led off the eighth with a double to right against Humber, and Callapso grounded out to Humber after fouling off two bunt attempts. Left-handed reliever Kevin Chapman then retired pinch hitter Nate Freiman on a fly ball to center fielder Brandon Barnes. When Sogard tagged up and tried to take third, Barnes threw a strike to third baseman Matt Dominguez, nailing Sogard.

A's manager Bob Melvin argued the out call vehemently with third base umpire Doug Eddings, who ejected him from the game. Bench coach Chip Hale took over the managerial duties for the remainder of the game.

NOTES: A's CF Coco Crisp (strained left wrist) received a cortisone injection Tuesday night and was out of the lineup Wednesday for the third straight game. Crisp aggravated the wrist injury Sunday at Toronto when he made a diving catch. "It had been lingering a little bit, and we felt like this was probably the best course of action to speed up the recovery," A's manager Bob Melvin said. ... A's C John Jaso (concussion) received good news and bad from Dr. Michael Collins, a concussion specialist who examined him Tuesday in Pittsburgh. "He said he is going to be fully recovered from this, Melvin said. "It's just not at this point, and it's going to take some time." Jaso has been on the disabled list since July 25. He has yet to be cleared for baseball activity, and there is no timetable for his return, Melvin said. ... Astros LHP Travis Blackley was traded to the Texas Rangers for a player to be named and cash considerations. Blackley was with Triple-A Oklahoma City after being designated for assignment Aug. 8. The Rangers assigned him to Triple-A Round Rock.