J . T . O ' Sullivan John Thomas " J . T . " O ' Sullivan ( born August 25 , 1979 ) is a professional gridiron football quarterback who is currently a free agent . He most recently played for the Saskatchewan Roughriders of the Canadian Football League . He was drafted by the New Orleans Saints in the sixth round of the 2002 NFL Draft . He played college football at UC Davis . O ' Sullivan holds the record for most NFL teams as a player at 11 . He has been a member of the New Orleans Saints , Green Bay Packers , Chicago Bears , Minnesota Vikings , New England Patriots , Carolina Panthers , Detroit Lions , San Francisco 49ers , Cincinnati Bengals , San Diego Chargers , and Oakland Raiders . He shares this record with Dave Rayner . Early years . O ' Sullivan was born in Burbank , California and attended Jesuit High School in Carmichael , California , where he was a letterman in football and baseball . In football , he was a two - time All - Metro League selection and led his school to a Sac - Joaquin Section crown in 1995 . In baseball , he played catcher and was an All - Metro League selection . O ' Sullivan graduated from Jesuit High School in 1997 . College career . He played quarterback for the University of California , Davis , and holds an NCAA Division II record ( tie ) for touchdown passes in a playoff game with 6 , set on November 25 , 2000 against Mesa State . He finished his three - year college career with 10 , 745 passing yards and 94 touchdown passes . He was also Chapter President of the Phi Delta Theta chapter at University of California , Davis Professional career . New Orleans Saints . He spent time in NFL Europe , and in 2004 he finished with the 2nd best passer rating in the league and led his team to World Bowl XII . He was with the New Orleans Saints in 2002 and 2003 before being traded with a second round draft pick to the Green Bay Packers for Mike McKenzie in 2004 . Green Bay Packers . He played the first regular season game of his career in 2004 while with the Packers , where he took a knee twice to end the game . First stint with Bears . O ' Sullivan spent part of 2005 with the Chicago Bears . Minnesota Vikings . O ' Sullivan also spent time with the Minnesota Vikings in 2005 New England Patriots . O ' Sullivan was with the New England Patriots for part of 2006 . Carolina Panthers . On December 26 , 2006 , O ' Sullivan was signed to the practice squad for the Carolina Panthers . Second stint with Bears . On February 8 , 2007 he signed with the Chicago Bears . In 2007 , He also participated again in NFL Europa for the Frankfurt Galaxy franchise for the second time . Prior to World Bowl XV , O ' Sullivan ( along with Centurions RB Derrick Ross ) shared the 2007 NFL Europa offensive MVP . O ' Sullivan was released by the Chicago Bears on July 7 , 2007 . Detroit Lions . On July 10 , 2007 , O ' Sullivan was signed by the Detroit Lions . Due to injuries to Detroit ' s other two quarterbacks , starter Jon Kitna and backup Dan Orlovsky , O ' Sullivan played the Lions ' final two 2007 preseason games in their entirety . On September 16 , 2007 , during his second career regular season game O ' Sullivan threw his first regular season touchdown pass , a seven - yarder to Calvin Johnson . San Francisco 49ers . After hiring O ' Sullivan ' s former offensive coordinator Mike Martz , the San Francisco 49ers signed O ' Sullivan to a one - year contract on February 29 , 2008 . On August 12 , 2008 , Coach Mike Nolan appeared on KNBR ' s " Murph and Mac Show " and announced that O ' Sullivan had moved into the lead for the 49ers starting quarterback job . On August 22 , 2008 , Coach Mike Nolan officially declared O ' Sullivan as the starting quarterback for the 49ers 2008 regular season . After a poor performance against the Seattle Seahawks ( 2 interceptions , 4 fumbles ) on October 26 , O ' Sullivan was benched and replaced by Shaun Hill by the new coach Mike Singletary . O ' Sullivan led the league in both interceptions and fumbles at the time of his demotion . Hill was named the starting quarterback for the remainder of the season . Cincinnati Bengals . An unrestricted free agent in the 2009 offseason , O ' Sullivan signed a two - year contract with the Cincinnati Bengals on March 5 , 2009 . He was released by the Cincinnati Bengals on September 5 , 2010 . San Diego Chargers . After O ' Sullivan was cut by the Bengals , the San Diego Chargers claimed him off waivers . O ' Sullivan was released by the Chargers on October 20 , 2010 . Oakland Raiders . O ' Sullivan was signed by the Oakland Raiders on December 2 , 2010 , replacing injured quarterback Bruce Gradkowski . Saskatchewan Roughriders . O ' Sullivan was signed by the Saskatchewan Roughriders on April 19 , 2012 . After dressing as the team ' s third string quarterback for most of the season , he was released on March 8 , 2013 .