Dorsey attended Bolles School where he was a defensive tackle and a three-time first team Class 4A All-State selection. As a senior, he registered 70 tackles (40 solo). He also played power forward in basketball.
He accepted a scholarship from Florida State University where he played six games as a true freshman at defensive tackle, registering 11 tackles and one sack. The next year, he was converted into an offensive tackle and was competing for a starting role at right tackle until suffering a season ending neck injury.
As a junior, he was demoted to third string after having problems maintaining his playing weight, but would eventually earn his way to backup Tarlos Thomas at right tackle, in a season when the team won a National Championship. In his last year, he received All-ACC honors and became a starter at right tackle ahead of sophomore Brett Williams, while helping quarterback Chris Weinke win the Heisman Trophy.
Dorsey was selected in the seventh round (242nd overall) of the 2001 NFL Draft by the Dallas Cowboys, after dropping because of a poor showing in the NFL scouting combine. Although he was working with the first-unit at left tackle, he abruptly left training camp after feeling pressure from the coaches to reduce his weight (he showed up at almost 390 pounds) and improve his performance, but was later convinced to come back.
He started the last two games of the season at right tackle in place of an injured Solomon Page. He was waived on September 9, 2002, after not being able to control his weight problems and not getting himself into better playing shape.
Dorsey was signed by the Houston Texans on September 14, 2002. He was released on November 29, after being inactive in 5 games.
He signed as a free agent with the New York Giants on January 7, 2003. He was placed on the physically unable to perform list while he recovered from off-season knee surgery. On August 19, he was waived injured after missing all of training camp recovering from the surgery.
Dorsey was the head coach at Matthew W. Gilbert Middle School, before accepting the same position at Andrew Jackson High School in 2011. After resigning with a 6-13 record in 2013, he returned to Gilbert as the team's offensive coordinator.
He worked as a security guard at Andrew A. Robinson Elementary School and as a football coach for the Mentors of Tomorrow (MOT) Cowboys in Jacksonville, Florida.
His father Charlie Dorsey signed as a free agent with the Kansas City Royals and was a three-time all-league tight end with the Jacksonville Firebirds of the American Football Association.