Victor Caratini hit a walk-off RBI single in the bottom of the 10th inning to lift the Astros to a 2-1 win over the Oakland Athletics at Minute Maid Park. Alex Bregman went 2-for-4 and belted his fourth homer of the season in Houston's third straight win. Josh Hader earned his second win of the year after tossing three strikeouts through two scoreless innings of relief. Astros starter Ronel Blanco was ejected after three frames following a foreign substance check. The Astros have won five of six and sit fourth in the AL West at 17-and-25. They host the A's again tonight. Left-hander Framber Valdez will start opposite Oakland righty Aaron Brooks.