Ian Stewart is still awaiting MRI results on his ailing left quad. Stewart hasn't played since a minor league game last Thursday and the pain has yet to subside. "I just tried to run, and can't run, can't get through the running part," said Stewart. "That's really the last hurdle. I can hit, take grounders, I just can't run." Regardless of the results, Luis Valbuena appears likely to open the season as the Cubs' starting third baseman.