[1] Cullen spent the next three and a half seasons in Miami (he left the team as the club's all-time leader in games and minutes).
After taking 2004 off to pursue his college degree, Cullen came back to MLS in 2005, his rights traded to the Colorado Rapids.
Cullen earned three caps for the United States men's national soccer team, his first coming February 21, 1999 against Chile.
On March 13, 2006, the University of Maryland hired Cullen as an assistant with the women's soccer team.
On January 7, 2010, Cullen was named the men's assistant coach at the United States Military Academy at West Point, NY.