Manager Aaron Boone said Sunday that Grisham pulled his hamstring in January but has since resumed baseball activities, Gary Phillips of the New York Daily News reports.
Grisham will be a bit delayed to start spring training, but it doesn't appear it will affect his availability for the start of the regular season. The 28-year-old was running close to full speed Sunday, per Bryan Hoch of MLB.com, so he could receive full clearance before too long.