Plouffe left Friday's game with a mild sprain of the MCL in his right knee, Phil Miller of the Minneapolis Star Tribune reports.
He was quietly lifted from the game in the fourth inning -- it was not obvious when he suffered the injury -- leading to speculation Plouffe may have been dealt from Minnesota. It turns out it was a knee injury that knocked Plouffe out, specifically a sprained MCL, but the "mild" classification lends some hope to Plouffe's chances of avoiding an extended absence.