Proving Grounds is back on NBCSN with Season 3 Premiering in July! Follow along with Parker Kligerman, Sam Smith, and Leh Keen as they put a variety of vehicles to the ultimate test known to man.
Proving Grounds Season 3
Proving Grounds is back on NBCSN with Season 3 Premiering in July! Follow along with Parker Kligerman, Sam Smith, and Leh Keen as they put a variety of vehicles to the ultimate test known to man.