貝克·梅菲爾德

德克萨斯理工大学

在2013赛季开季前不久，梅菲尔德接替受伤的迈克尔·布鲁尔成为先发四分卫。梅菲尔德被认为是第一个在开幕战实际担任四分卫位置的一年级生。
在首次对阵南方卫理会大学时，梅菲尔德传出了413码与四次达阵，并以60传43中的成绩打破由比利·乔·托利亚保持的学校纪录，且是NCAA第一级别FBS仅有完成此纪录的四名大一新生之一。 For his performance, Mayfield was named Big 12 Conference Offensive Player of the Week – the first freshman Texas Tech quarterback to be named so since current Red Raider head coach Kliff Kingsbury in 1999. The game featured the last four former Lake Travis quarterbacks combined on both teams: Garrett Gilbert, Michael Brewer, Collin Lagasse, and Mayfield.
Following the Red Raiders' second victory over Stephen F. Austin, Mayfield's 780 season yards and seven touchdowns already exceeded the 755 yards and six touchdowns accrued by Texas Tech's last true freshman quarterback, Aaron Keesee, in 10 games. After being affected by injury and losing the starting job to fellow true freshman Davis Webb, Mayfield finished the season with 2,315 yards on 218-of-340 completions with 12 touchdowns and 9 interceptions.
Mayfield was named one of 10 semifinalists for the Burlsworth Trophy in November; the award is given to the best player in Division I football who began his college career as a walk-on.
Mayfield earned Big 12 Conference Freshman Offensive Player of the Year for the 2013 season. Mayfield announced that he would be leaving the program due to a 'miscommunication' with the coaching staff.

奥克拉荷马大学

梅菲尔德在2014年1月转学至奥克拉荷马大学，but had not contacted the Sooner coaching staff. Mayfield further elaborated in an interview with ESPN that he sought to transfer due to scholarship issues and a perception that he had earned the starting position and that further competition was not "really fair". The alleged scholarship issues were denied by Texas Tech coach Kliff Kingsbury.
In February 2014, Oklahoma head coach Bob Stoops confirmed that Mayfield would be walking on for the Oklahoma Sooners. Mayfield was not eligible to play until the 2015 season, and lost a season of eligibility due to Big 12 Conference transfer rules following an unsuccessful appeal of his transfer restrictions.

2015年赛季

On August 24, 2015, Mayfield was named the starting quarterback for the Sooners after winning an open quarterback competition against Trevor Knight. On September 6, 2015, Mayfield started against Akron. Mayfield totaled 388 yards through the air with 3 touchdowns on 23 completions in the 41–3 win. In the second game of the 2015 season, Mayfield started at Tennessee at Neyland Stadium. The Sooners were ranked 19th at the time and the Volunteers were ranked 23rd. Mayfield started off very slow in the game, not even reaching midfield until the 13-minute mark of the 4th quarter. Oklahoma came back from a 17-point deficit to win the game in double overtime. Mayfield threw for 187 yards and three touchdowns on 19 completions while throwing two interceptions early in the game in the 31–24 2OT win. In the third game of the season, Mayfield got the start against Tulsa. He had a career day throwing for 487 yards and four touchdowns, including 316 yards at half. Mayfield also ran for 85 yards and two touchdowns in the 52–38 win.
Mayfield finished the year with 3,700 passing yards, 36 touchdowns, and seven interceptions. He finished fourth in the Heisman Trophy voting and helped lead Oklahoma to the College Football Playoff semifinal (2015 Orange Bowl). However, they lost to Clemson by a score of 37–17.

2016年赛季

Mayfield started the 2016 season off with 323 passing yards and two touchdowns in a 33–23 loss to #15 Houston. In the rivalry game against Texas on October 8, he had 390 passing yards, three touchdowns, and two interceptions in the 45–40 victory. On October 22, in a 66–59 victory over Texas Tech, Mayfield had 545 passing yards and seven touchdowns in the historical matchup against Patrick Mahomes. Mahomes tallied 734 passing yards and five touchdowns to go along with Mayfield's numbers in a game that broke various single-game passing records. Over the final five games of the regular season, Mayfield totaled 1,321 passing yards, 15 passing touchdowns, and three interceptions to go along with three rushing touchdowns. All five games were victories for the Sooners.
It was announced in December 2016 that Mayfield and his top receiving target, Dede Westbrook, would be finalists for the 2016 Heisman Trophy. It was also announced that they would play in the 2017 Sugar Bowl. Mayfield ended up finishing third in the Heisman voting.
In the 2017 Sugar Bowl, Mayfield helped lead the Sooners to a 35–19 victory over Auburn. He finished the bowl game 19-for-28 with 296 passing yards and two touchdowns earning him the MVP award.

2017年赛季

2017年9月9日，梅菲尔德在球队获胜后，将奥克拉荷马大学的旗帜插在俄亥俄体育场草地的O上面，这样的举动让球迷们十分不满，而本人也在不久后道歉。
2017年11月4日，梅尔尔德在对上同州世仇奥克拉荷马州立大学时，缴出了生涯新高的598码传球，并以36传24中5次传球达阵的成绩，带领球队以62-52击溃对手。梅菲尔德同时作为奥克拉荷马大学的首发四分卫，在疯人大战(奥克拉荷马大学与奥克拉荷马州立大学的世仇对决)中，达成生涯3-0的横扫成绩。
In November 2017, Mayfield was under fire again after an interaction during the game against Kansas. Mayfield was seen grabbing his crotch and mouthing "Fuck you!" at the coach of the opposing team. He also told their fans to "Go cheer on basketball." In response, Mayfield issued another public apology. Days after the 41–3 victory over Kansas, Sooners head coach Lincoln Riley announced that Mayfield would not start or be the captain during the upcoming game against West Virginia due to his actions against Kansas. 
2017年12月2日，12大联盟睽违六年重新举办联盟冠军赛。梅菲尔德带领球队在冠军赛中，以41-17击败了德克萨斯基督教大学。赛后梅菲尔德被选为冠军赛MVP。奥克拉荷马大学也取得了三年内第二个季后赛的资格。但最后在2018年玫瑰杯(季后赛半决赛)时以54-48输给了乔治亚大学。
梅菲尔德以囊括大多数选票的优势拿下海斯曼奖，他总共拿到了732张第一名选票，最终获得2398分。换算下来，他总共拿下了86%的得票率，这在海斯曼奖历史上可以排到第三高。此外，梅菲尔德是唯一以试训球员身份拿下海斯曼奖的人。

“梅菲尔德条款”

当梅菲尔德打完他的大一球季之后，便从德克萨斯理工大学转至奥克拉荷马大学。梅菲尔德向NCAA上诉，希望能立即取得为奥克拉荷马大学上场比赛的资格，因为他是借由试训管道进入德克萨斯理工大学，且没有接受任何奖学金。梅菲尔德主张他并不适用跟领取奖学金的球员一样的转学制度。但上诉被驳回了，NCAA认为他并不符合立即上场的资格。12大联盟的转校规则，他只能到2015-16赛季才能出战，而且将会损失一个赛季的大学球员资格。
奥克拉荷马大学官方要求德州理工大学同意梅菲尔德上场，但德州理工大学拒绝并反对了这项要求。梅菲尔德被迫在2014年停赛，也损失了12大联盟规则中要求的一年大学球员资格。
2016年6月1日，12大联盟的代表们提出，让像是梅菲尔德这样借由试训且没有领取奖学金的球员能够摆脱转学的限制，这项提案在第二天的投票中以7-3的比数通过，梅菲尔德也得以继续参加2017年的比赛。而梅菲尔德的前学校德州理工大学也投下同意票。