Manny Machado (knee) is tentatively scheduled to have a follow-up exam with his surgeon Dr. Neal ElAttrache on March 18. Machado could receive full clearance for baseball activities at that time. The 21-year-old hasn't had any issues with his surgically-repaired knee this spring and can do most of the drills in O's camp, but he still needs to run the bases at full speed and begin sliding. Opening Day isn't the be-all and end-all, so early-to-mid April appears more realistic.