After Wednesday’s 89-82 resetting win over USC inside the Schottenstein Center, Ohio State heads to Nashville without its star guard for a Valentine’s Day matchup with No. 15 Virginia.  Ohio State announced Saturday afternoon that star guard John Mobley Jr. will miss time with an undisclosed hand injury. The program expects him back later this season, but it hasn’t set a timetable. His absence forces an immediate adjustment, and Taison…