A Tennessee State football player was kicked off his team and expelled from the university for reasons that will become obvious in two seconds when you scroll down and play the video on this tweet:
According to The Tennessean, the coach that was on the receiving end of those blow(s) was T.J. Greenstone, an ex-Vanderbilt football player who serves as both the team's strength and conditioning coach as well as the "get back" guy (a.k.a. the coach responsible for keeping players from getting too close to the field so the team doesn't get a penalty). The Tennessean adds Greenstone was punched while walking down the sideline telling players to scoot away from the field while TSU was on offense, though it's not clear what caused the violence.
As for the man who threw the punch, that would be 22-year-old defensive end Latrelle Lee. Lee was a senior who not only made the Ohio Valley Conference Commissioner's Honor Roll last year, but was also (somewhat ironically) majoring in criminal justice. Though he had started eight games over the past two seasons, Lee did not play in the Saturday night contest during which the incident occurred, which ended in a 23-20 win over Southeast Missouri (not that anyone cares).
Lee had 18 tackles, 3.5 of which were for a loss, this season. He was expelled on Monday. As for the school, TSU athletic director Teresa Phillips released a statement on the matter. "We, of course, do not condone any act of violence within our department and are very disturbed by the action of one of our students," Phillips said. "We are committed to supporting the coach who was personally affected and our concern now is with him.”