Renteria suffered a mild hamstring strain on July 9 and sat out for a few games before the All-Star break. In the first two games after the break, he went 3-for-7, but has gone 0-for-8 over the last two games.
Leyland said he wouldn't hesitate to use shortstop Ramon Santiago if he didn't think Renteria was healthy enough.
"I wouldn't not play him unless I thought he wasn't going to get the job done," Leyland said about Renteria. "But there are going to be balls in emergency situations where he's not going to take a chance at the ball at all."
Mark Dent is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.