Deontay Wilder profiled in NBCSN special, American heavy, debuting this Mon., Sept. 21 at 6:30 pm ET

STAMFORD, Conn. - September 17, 2015 - NBCSN presents a 30-minute special on undefeated heavyweight titleholder Deontay Wilder, American Heavy, debuting this Monday, Sept. 21 at 6:30 p.m. ET, ahead of