In 2004, he missed the game against Temple University because of a concussion, ending a streak of 42 consecutive starts. He was a second-team All-American selection by "The Sporting News" and "College Football News", third-team from "The NFL Draft Report" and "Associated Press". He was a unanimous first-team All-Big East selection by the coaches. Petitti was also a three-time All-Big East pick, becoming the first school offensive lineman to achieve this recognition since Ruben Brown was a three-time selection from 1992 to 1994. He finished his college career after playing and starting in 49 games, missing just a single contest due to injury.