Hathaway (undisclosed) had all his tests come back negative after he was injured Thursday in Pittsburgh, per Kevin Kurz of The Athletic.
While Hathaway avoided a serious injury, he doesn't yet have a timetable to return. Hathaway has eight goals, 10 assists, 218 hits and 56 blocked shots over 60 contests this season. He should tentatively be considered day-to-day ahead of Saturday's game in Winnipeg.