Manager Craig Counsell said following Saturday's win over the Reds that Boxberger exited the contest with right shoulder stiffness, Todd Rosiak of the Milwaukee Journal Sentinel reports.

Boxberger left after allowing a game-tying homer to Jonathan India in the bottom of the eighth inning. His velocity appeared to be down during the relief appearance, which makes sense given that he is dealing with a shoulder issue. The skipper labeled the right-hander day-to-day, so it remains to be seen if he'll be available for Sunday's series finale.

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