Lucroy (hamstring) has been working out at Brewers camp since Sunday and has participated all week in baseball drills that did not involve running, MLB.com reports.After a recent MRI revealed a "mild strain" to Lucroy's hamstring, the team promptly ordered a platelet-rich plasma injection in hopes of speeding up his 4-to-6 week estimated recovery timetable. It seems the treatment has helped a good deal, as Lucroy reported significant improvement Friday. He said he plans to catch pitchers' bullpen sessions and take part in defensive drills, and added that he hopes to get at-bats in minor league spring training games. The 28-year-old will refrain from running until cleared by the training staff, but as of now, he appears on track to be ready for Opening Day.