Career
He played for Colo-Colo, where he was part of the 2006 apertura, 2006 clausura, 2007 apertura, 2007 clausura, 2008 clausura championship teams. Now is the captain of Santiago Wanderers club where he start his football player career. He has also represented his country in four Copa América tournaments.
Villaroel has mainly played as a right sided defender and defensive midfielder.
He has been described as a tough defensive minded player with a high work-rate.