Josh Hamilton (calf) hit in the batting cage Wednesday and has begun running on a weight-reducing treadmill. Hamilton strained his left calf at the end of February and will probably be held out of Cactus League action for another week. But if he continues making steady progress, he should be fine for Opening Day. The 32-year-old outfielder is aiming for a big rebound season after posting a weak .739 OPS in 2013 for Anaheim.