There's always going to be a grey area between being hurt and being injured, and the communication between player and medical/training staff will always be imprecise under the best of circumstances. That said, the Twins seem to be enduring more than their fair share of players playing through debilitating injuries, whether through their own concealment or failure of recognition on the part of the staff. Language considerations aside, it's particularly troubling with Park. A veteran like Plouffe may be able to judge whether the sore ribs made him tardy on a Chris Sale fastball he'd normally catch up to. But even if Park can describe how he feels, he doesn't have the experience in the league to give him external feedback on whether he's playing effectively through the pain instead of just ineffectively with the pain.