• Astros manager Bo Porter has been trying to work backup catcher Carlos Corporan into the lineup, but with Jason Castro putting together a strong season, it has been hard to find Corporan playing time.
"I try to do everything I can to keep him as sharp as possible," Porter said. "That's why there have been stretches where I've given him back-to-back days with one game catching, one game DHing. Obviously try to play him against all the left-handers depending where we are at schedule-wise. Part of that is to keep Castro fresh and the other part is to get Corporan enough playing time where he stays sharp."
• Left-handed-hitting first baseman Carlos Pena is 4-for-8 in the two games against the Angels, and Porter believes he is just getting started.
"Carlos has been great," Porter said. "He's going to hit his stride because he is a streaky hitter. He's a guy that can carry a ballclub. That's why today, even though it's a lefty [C.J. Wilson], he's in there. I feel like he's really on the cusp of breaking out and I want to keep him rolling, keep him in the lineup."
• Shortstop Marwin Gonzalez, who is nursing a slight strain of his right hamstring, is expected to return to the lineup on Monday.
William Boor is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.