McElroy, only 25, spent last season on the Cincinnati Bengals' practice squad and is currently under contract to the Bengals.
"At this time, I would like to announce my retirement from the NFL," McElroy tweeted. "Thank you to Marvin Lewis, the Brown family and the entire Cincinnati Bengals' organization. The fans make this decision especially difficult, as you have provided so much joy throughout my career. Playing in the NFL was my lifelong dream; therefore, I must also thank the New York Jets for providing me with my original opportunity. The future is bright, and exciting things are on the horizon! God bless to all."
McElroy, who led Alabama to a 14-0 record and the BCS championship as a junior, was a seventh-round pick of the Jets in 2011. He was thrown into the three-ring, quarterback circus in 2012, when they had Sanchez and Tebow. McElroy's shot was fleeting. On Dec. 2, he replaced an ineffective Sanchez and helped the Jets to a come-from-behind win against the Arizona Cardinals in quite possibly the ugliest game ever played.
Three weeks later, the Jets' quarterback controversy exploded when Sanchez was benched and McElroy -- not Tebow -- was named to start against the San Diego Chargers. McElroy was battered in the loss, as he was sacked 11 times. He suffered a concussion, but it wasn't diagnosed until a few days later, prompting Rex Ryan to replace him with Sanchez for the finale. McElroy, perhaps knowing he'd never get another chance to prove himself, wasn't forthcoming with regard to the concussion symptoms.
He lost his third-string job last summer to Matt Simms. As a member of the Bengals' practice squad, McElroy received a shout out from the coaching staff for preparing a detailed scouting report on the Jets, which they used in Week 8 -- a 49-9 win by the Bengals.
His final NFL statistics: Two games, 19-for-31, 214 yards, one touchdown, one interception.
McElroy, who posted one of the highest Wonderlic scores in history, is exceptionally bright and has talked about a career in TV or politics. His transition to the "real world" should be seamless. Like he said, the future is bright.