Larsen's fracture hamate bone will require surgery, Ryan Divish of The Seattle Times reports.

EDGE Analysis

The surgery will likely cause him to miss significant time. Larsen was playing well as a non-roster invite and had a slim chance of winning one of the backup spots on the Seattle bench coming out of the Cactus League. When he returns, it will now all but assuredly be at Triple-A with Tacoma.