Josh Johnson (shoulder) is currently throwing off a mound three days a week. Johnson was limited to just nine starts last season to shoulder issues, but he's been throwing pain-free off a mound since mid-January and doesn't expect to have any restrictions entering spring training. "I feel great. No problems," said Johnson. "I don't feel anything in there." The Marlins are hoping their ace right-hander will be ready to toe the rubber on Opening Night against the Cardinals on April 4.