For which college football team did both Baker Mayfield and Trevor Knight play starting quarterback?
Oklahoma Sooners
Trevor Knight
Trevor Knight (born October 3, 1993) is an American football quarterback for the Atlanta Falcons of the National Football League (NFL).
 He played college football for the Oklahoma Sooners and Texas A&M Aggies.
 After leading Oklahoma to an 8–5 record in the 2014 season, he lost the starting job in an open quarterback competition to Texas Tech transfer Baker Mayfield prior to the 2015 season.
 On January 4, 2016, it was announced that Knight would transfer to Texas A&M University.
Baker Mayfield
Baker Reagan Mayfield (born April 14, 1995) is a college American football quarterback for the Oklahoma Sooners.
 Mayfield began his college football career as a walk-on player for the Texas Tech Red Raiders.
 He is notable for being the first walk-on true freshman quarterback to start a season opener at a BCS school.
 Mayfield transferred from Texas Tech to Oklahoma following alleged scholarship issues and a lack of communication with coaches.
 After sitting out the 2014 season due to NCAA transfer rules, Mayfield won the starting quarterback job in 2015 over Cody Thomas and incumbent starter Trevor Knight.
Darian Durant
Darian Bernard Durant (born August 19, 1982) is a professional Canadian football quarterback for the Montreal Alouettes of the Canadian Football League (CFL).
 He played college football at the University of North Carolina.
 After his college career, he held school records for completion percentage, touchdowns, passing yards, total offense and completions.
 Durant was signed as a free agent by the Saskatchewan Roughriders in 2006, and became the club's full-time starting quarterback in 2009.
 He was named a CFL West Division All-Star in 2009 and 2013.
 His brother Justin plays in the National Football League as a linebacker.
 Durant was the starting quarterback when the Saskatchewan Roughriders won the 101st Grey Cup in 2013 on their home field. Jon Kitna
Jon Kelly Kitna (born September 21, 1972) is an American football coach and former quarterback.
 After playing college football for Central Washington University, he signed with the Seattle Seahawks in 1996 and was allocated to the Barcelona Dragons of NFL Europe in 1997.
 He led the Dragons to a World Bowl championship, and became the starting quarterback for the Seahawks in 1998 after spending the 1997 and most of the 1998 seasons as the backup to Warren Moon.
 Following a four-year stint with Seattle, Kitna signed with the Cincinnati Bengals in 2001.
 He played for the Bengals from 2001 to 2005 as their starting quarterback, and, later, the mentor to Carson Palmer.
 He was a member of the Detroit Lions from 2006 to 2008, and the Dallas Cowboys from 2009 to 2011. Tate Forcier
Robert Patrick ("Tate") Forcier (born August 7, 1990) is a former American football quarterback.
 He was a starting quarterback for the 2009 Michigan Wolverines football team ahead of Denard Robinson, and Robinson's back up for the 2010 Michigan Wolverines football team before he lost the starting job and left the program in January 2011 when head coach Rich Rodriguez was replaced by Brady Hoke.
 He missed the January 1, 2011 Gator Bowl after being ruled academically ineligible and was no longer enrolled at the university when the new term began following the semester break.
 On February 9, 2011, Forcier announced his transfer to the University of Miami.
 He originally intended to redshirt the 2011 season and play for the Miami Hurricanes football team in the 2012 and 2013 season but instead transferred to San Jose State University to play for the Spartans football team.
 He soon withdrew from the San Jose State football program.
 He then attended training camp with the Hamilton Tiger-Cats of the Canadian Football League. Howard Yerges
Howard Frederick Yerges, Jr. (April 5, 1925 - December 1, 2000) was an American football player who played quarterback for the Ohio State Buckeyes football team in 1943 and the University of Michigan Wolverines football teams from 1944 to 1947.
 He was the starting quarterback of the 1947 Michigan Wolverines football team that went undefeated, beat USC 49-0 in the Rose Bowl and is considered by some to be the greatest Michigan football team of all time.
 As of 2009, Yerges was one of three players (along with Justin Boren and J. T. White) to play on both sides of the Michigan – Ohio State football rivalry. Tyrod Taylor
Tyrod Di'allo Taylor (born August 3, 1989) is an American football quarterback for the Buffalo Bills of the National Football League (NFL).
 He was the starting quarterback for the Virginia Tech Hokies football team from the start of the 2008 college football season through the 2011 Orange Bowl, the final game of the 2010 college football season for Virginia Tech.
 He was drafted by the Baltimore Ravens in the sixth round of the 2011 NFL Draft and served as the backup to starting quarterback Joe Flacco, including during the Ravens' Super Bowl XLVII victory over the San Francisco 49ers.
 Signed by Buffalo as a free agent in 2015, Taylor was named the starting quarterback for the Bills at the beginning of the 2015 NFL season. Kirk Herbstreit
Kirk Herbstreit ( ; born August 19, 1969) is an American analyst for ESPN's "College GameDay", a television program covering college football and a provider of color commentary on college football games on ESPN and ABC.
 He appeared annually as a commentator in EA Sports' "NCAA Football" until the series was put on hiatus following "NCAA Football 14".
 He was a quarterback on the Ohio State football team.
 He saw action in several games his junior season and was the starting quarterback throughout his senior season. Clayton Thorson
Clayton James Thorson is an American football quarterback.
 He is currently a redshirt junior and the starting quarterback for the 2017 Northwestern Wildcats football team.
 After redshirting in 2014, he was named the starting quarterback in 2015 and led the Wildcats to the third 10-win season in program history.
 As a starter for the 2016 team, he earned Academic All-Big Ten honors.
 Thorson was selected by ESPN.com as the seventh best high school quarterback and played in the 2014 Semper Fidelis All-American Bowl. Archie Manning
Elisha Archibald Manning III (born May 19, 1949) is a former American football quarterback who played professionally for 16 seasons in the National Football League (NFL).
 He played in the NFL for the New Orleans Saints from 1971 to 1982, and for short stints with the Houston Oilers and Minnesota Vikings.
 In college, he played for the Ole Miss Rebels football team at the University of Mississippi, and was later inducted into the College Football Hall of Fame.
 Manning is the father of Cooper Manning, former quarterback Peyton Manning, and Eli Manning, who is the current starting quarterback for the New York Giants.
 His sons Peyton and Eli have each won two Super Bowls.