Astros outfielder J.D. Martinez said he is working on a new batting grip that has alleviated tension on his left hand and should keep him healthy during spring training. Martinez started choking up slightly above the barrel of the bat after having surgery last season to remove the hamate bone in his left hand, an injury that was caused by the bat digging into his palm. "At the beginning, it was weird," he told MLB.com on Monday. "I was kind of resistant to it. I felt a relief when I did it, though. The next day wasn't as sore. That's probably it. I started doing it and once you start swinging, you get used to it."
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