Bordano accepted a football scholarship from Southern Methodist University. As a freshman in 1993, he missed the first 2 contests and did not enter the starting lineup until the eighth game of the season. He recorded 63 tackles. He had 14 tackles in his first start against Texas A&M University. He made 19 tackles, one forced fumble and one pass defensed against Rice University. He had 22 tackles against Texas Tech University. As a sophomore in 1994, he missed the final 3 games. He led the SWC Conference with an average of 13.9 tackles per game, posting 111 tackles, 2 stops for losses and 3 fumble recoveries. He had 17 tackles and one forced fumble against the University of New Mexico. He made 18 tackles and one fumble recovery against the University of North Carolina. He ad 15 tackles against the University of Texas. In 1995, he was injured during fall drills and was lost for the season. As a junior in 1996, he returned to lead his team and rank fifth in the Western Athletic Conference with 124 tackles. He had 19 tackles against the University of Missouri. He made 17 tackles against Texas Christian University. As a senior in 1997, he started the first 6 games and the last 3 contests at middle linebacker. He led the team with 120 tackles and was named the Western Athletic Conference Mountain DivisionDefensive Player of the Year. He left ranked fifth in the SMU's career tackles list and became just the tenth player in school history to be named to three All-conference teams.
Bordano was selected by the New Orleans Saints in the sixth round of the 1998 NFL Draft. He started 6 games as a rookie at middle linebacker and made 62 tackles and 8 special teams tackles. He had 9 tackles against the San Francisco 49ers. In 1999, although he was considered slow for the position, he showed enough athletic ability to start 12 games at middle linebacker and register 59 tackles. On April 26, 2000, he was traded to the Dallas Cowboys in exchange for cornerbackKevin Mathis.
In 2000, the Dallas Cowboys had a lot of turnover at linebacker and one of the moves made to improve the depth was trading for Bordano. He was passed on the depth chart by rookie Orantes Grant and was released to make room for cornerback Phillippi Sparks on August 28.
Atlanta Falcons
On September 7, 2000, he was signed as a free agent by the Atlanta Falcons. He appeared in 2 games as a backup, before fracturing a neck vertebra and being placed on the injured reserve list on September 19. He retired after being told by doctors that another injury on the neck could be life-threatening.