Swarzak exited Saturday's game against the Cardinals with an apparent injury, Tim Britton of The Athletic New York reports.
Swarzak appeared to grimace and twist his side after issuing a two-out walk to Jose Martinez. The reliever was subsequently replaced by Jeurys Familia and left the game with a trainer. Specifics regarding the injury remain unclear at this point, but more should be known following the conclusion of Saturday's contest. Consider him day-to-day for now.