Question:  Tobin Bo Gunnar Gerhart held the Stanford record for most rushing yards in a season until the record was broke by an American football running back holds the NCAA record for what?

<P0-S0> Tobin Bo Gunnar Gerhart (born March 28, 1987) is an American football running back who is currently a free agent. <P0-S1>  He was selected by the Minnesota Vikings in the second round of the 2010 NFL Draft. <P0-S2>  He played college football for Stanford University, and was a unanimous All-American. <P0-S3>  In 2009 Gerhart won the Doak Walker Award and was the runner-up for the 2009 Heisman Trophy. <P0-S4>  He received 1,276 points in the Heisman voting, coming in second to Mark Ingram Jr., who received 1,304 points; the 28-point margin was the closest vote in Heisman history. <P0-S5>  Gerhart had a breakout senior season in 2009, leading all running backs in the nation in rushing yards, touchdowns, and points scored, and setting several Pac-10 and school records. <P0-S6>  He held the Stanford record for most rushing yards in a season (1,871) until Christian McCaffrey broke it in 2015, but still holds Cardinal records for touchdowns in a season (28), and most touchdowns in a career (44). <SEP> <P1-S0> James Walter Morris (born June 6, 1965) is a former professional American football running back in the National Football League (NFL) for the Washington Redskins and a record-setting running back in college for the University of Michigan Wolverines. <P1-S1>  While attending Michigan, he broke the school's all-time records for rushing yards in a season and in a career and for all-purpose yards in a career. <P1-S2>  His career rushing total was once third in Big Ten Conference history. <P1-S3>  He continues to hold the career receptions record for Michigan running backs. <P1-S4>  He also still holds the all-time NFL record for most rushing attempts in a game with 45. <SEP> <P2-S0> Fred Wendt (born c. 1927) was an American football player. <P2-S1>  He played college football for the UTEP Miners football team. <P2-S2>  He led the NCAA major colleges in rushing yardage with 1,570 rushing yards in 1948. <P2-S3>  His total of 1,570 rushing yards in 1948 broke the national collegiate rushing record of 1,281 yards set by Rudy Mobley in 1942. <P2-S4>  Wendt's rushing record stood for 20 years until broken in 1968 by O. J. Simpson. <P2-S5>  Wendt also broke the NCAA single-season scoring record with 152 points in 10 games, including 32 place-kicking points. <P2-S6>  He did not play during the 1949 season due to a leg injury and was signed by the Chicago Cardinals of the National Football League in April 1950. <SEP> <P3-S0> Christian Jackson McCaffrey (born June 7, 1996) is an American football running back for the Carolina Panthers of the National Football League (NFL). <P3-S1>  He played college football at Stanford, and was drafted by the Panthers with the eighth overall pick in the 2017 NFL Draft. <P3-S2>  As a sophomore in 2015, McCaffrey was the AP College Football Player of the Year and the runner-up for the Heisman Trophy. <P3-S3>  He holds the NCAA record for most all-purpose yards in a season with 3,864. <P3-S4>  He is the son of former Stanford and NFL wide receiver Ed McCaffrey and former Stanford soccer star Lisa McCaffrey, who is the daughter of U.S. Olympian Dave Sime.