Romero finished his college career with 22 quarterback sacks, ranking him fifth in school history.

Romero signed with the Edmonton Eskimos of the Canadian Football League as a free agent in 2001.

After a year in Edmonton, Romero was signed by the Miami Dolphins of the National Football League in 2002.

Romero spent three seasons with the Dolphins, appearing in 22 games with two starts and recording 3.5 sacks.

Romero signed with the Eskimos again in 2008 and played three more seasons in Edmonton while being named a CFL West All-Star in both 2008 and 2009.