re: When did the last Heisman lose 3 games?

Heisman winners whose teams lost three games or more:

2023 Jayden Daniels (9-3)
2022 Caleb Williams (11-3)
2016 Lamar Jackson (9-4)
2011 Robert Griffin III (10-3)
2007 Tim Tebow (9-4)
1998 Ricky Williams (9-3)
1990 Ty Detmer (10-3)
1988 Barry Sanders (9-3)
1987 Tim Brown (8-4)
1985 Bo Jackson (8-4)
1981 Marcus Allen (9-3)
1980 George Rogers (8-4)
1970 Jim Plunkett (9-3)
1969 Steve Owens (6-4)
1961 Ernie Davis (8-3)
1957 John David Crow (8-3)
1956 Paul Hornung (2-8)
1935 Jay Berwanger (4-4)