Grisham (hamstring) took part in live batting practice Wednesday, MLB.com reports.
Grisham is said to be "pretty deep into his running progression," which is the most significant part of his recovery from a right hamstring strain. He's also been hitting and doing other baseball activities. Grisham has already been ruled out from returning to action during the regular season, but if he continues to progress, he could be activated at some point during the playoffs.