Altuve took pregame batting practice and Porter said the second baseman will be re-evaluated prior to Saturday's game to determine his availability.
"I always lean on the side of caution, especially when you're talking lower extremity," Porter said. "The last thing you want is for something to be mild and then you get into a game and it becomes something that lingers for a long period of time."
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. Robert Falkoff is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.