Peterman attended Saint Stanislaus College in Bay St. Louis, Mississippi, where he was an All-state and a two-time All-district selection at tight end.

As a freshman, he was converted into a defensive end, appearing in 5 games and making 8 tackles (3 for loss) as a backup.

[1] As a rookie, he broke a finger at the start of training camp, before tearing the ACL and MCL of his right knee in the last game of the pre-season (while playing special teams), which placed him on the injured reserve list on September 3.

Peterman was part of a string of unsuccessful offensive lineman selections made by the Cowboys in the first rounds of the draft: Al Johnson (2003), Jacob Rogers (2004).

[3] He was placed on the injured reserve list on November 20, with a right ankle injury he suffered playing against the Minnesota Vikings.