Alvarado was unavailable to pitch Tuesday against Toronto because of tightness in his left wrist, Todd Zolecki of MLB.com reports.
Alvarado mentioned that he's "unconcerned" about the injury, and he hopes to pitch during Wednesday's game against the Blue Jays if needed. The left-hander should be considered day-to-day, and even if he doesn't log an appearance Wednesday, this doesn't appear to be a long-term issue.