Moorman became the first four-time All-American football player in Pittsburg State University history. He earned first-team NCAA Division II All-America honors as a punter in each of his final two collegiate seasons (1997–98) after earning honorable mention All-America honors his first two years (1995–96). Moorman still holds the school's career punting record (43.97 ypp) and he was named to PSU's prestigious 100th Anniversary Football Team in 2003.
Moorman earned All-America honors on 10 occasions, including three straight NCAA Division II national championships in the 400 meter hurdles (1997–99). He also claimed eight conference individual event titles. Moorman also still holds the Pittsburg State University school record in the 110 meter hurdles (13.81) and ranks second all-time at PSU in the 400m hurdles (49.77).
Moorman signed with the Buffalo Bills as a free agent during the summer of 2001. Moorman was named to the starting squad of the 2006 Pro Bowl for the second consecutive year. On July 2, 2007 the Buffalo Bills rewarded Moorman with a 10 million dollar contract extension (through 2012), making him the second-highest paid punter in the league, behind Shane Lechler. In a 2008 34-10 opening day victory over the Seattle Seahawks, Moorman lined up to hold for what looked like a routine Field Goal attempt by placekicker Rian Lindell, but instead took the ball and heaved a 19-yard touchdown strike to defensive endRyan Denney. Moorman had a career average of 46.6 yards per punt. In 2009 he also had a new career high in total yards punting with 4192 yards. On September 25, 2012, the Bills released Moorman soon after the third regular season game. He was replaced by Shawn Powell.
Following his release from the Bills, he announced his retirement through a letter to the city of Buffalo. As of 2015, he has not ruled out a comeback (he nevertheless does not expect to receive any offers because of his age). He resides in Ponte Vedra Beach, Florida.