"Marwin's hamstring is a concern of mine," Porter said. "Watching him run around and knowing he's not 100 percent, he's doing the best he can to get out there and gut it out and play. But it's something we have to be very mindful of and not blow his hamstring, and now you're looking at a considerable amount of time being missed."
Gonzalez injured the hamstring running the bases Saturday in Chicago and said Wednesday night he wasn't at 100 percent. The last thing the Astros need is another position player on the DL.
"You just pray that we're able to get healthy here soon and get some of these guys back and get some of these guys feeling better," Porter said.
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.