Tebow entered the game against the San Diego Chargers at half time in place of Orton, and Tebow started every remaining Broncos game, with Quinn remaining on the bench. In two seasons with the Broncos, Quinn did not play in any games. Kansas City Chiefs Quinn signed with the Kansas City Chiefs on March 17, 2012. After competing for a backup quarterback spot, Quinn beat Ricky Stanzi for the spot and it was official on August 27, 2012. He then made his Kansas City debut against the Baltimore Ravens on October 7, 2012, after Matt Cassel suffered a concussion. On October 11, Cassel was ruled out for Week 6 game against the Tampa Bay Buccaneers, and Quinn got his first start as a Chief. Following that game, Quinn was announced as the starter by head coach Romeo Crennel for the October 28, 2012 game against the Oakland Raiders. After playing less than a quarter, Quinn left that game with a concussion. Cassel returned to the game and started the games following. However Quinn replaced Cassel at half in the November 15 game against Cincinnati and was awarded the starting job once again. A day after the murder-suicide by linebacker Jovan Belcher, Quinn played arguably his best game as a starter in an emotional 27–21 win over the Carolina Panthers on December 3, completing 19–23 passes for 201 yards and two touchdowns. Quinn was chosen as the AFC Offensive Player of the Week following the game. He also received media attention for his eloquent comments about the circumstances following the game. Seattle Seahawks On April 11, 2013, Quinn signed with the Seattle Seahawks as the backup quarterback to Russell Wilson. He was released on August 31, 2013, during final roster cuts. Quinn had battled all preseason with Tarvaris Jackson for the backup job. New York Jets Quinn was signed by the New York Jets on September 2, 2013, but was released five days later. He was re-signed on September 9, 2013. Quinn was released on October 21, 2013. St. Louis Rams Quinn was signed by the Rams on October 23, 2013, to back-up Kellen Clemens after starter Sam Bradford suffered a torn ACL. Quinn herniated two discs in his back in the weight room the second week he was with the team and would never see the field. Quinn was placed on IR for the final four weeks of the 2013