Kirk Ferentz holds the record for both OW (overall wins) and OL (overall losses) in coaching history for the Iowa Hawkeyes.
148 98 3 2 3 4 4 4 7 1 4 4 29 11 24 8 7 10 2 4 42 24 18 17 33 27 15 21 2 13 35 33 2 13 2 7 5 10 52 27 16 27 16 32 4 28 18 37 143 89 1999present Kirk Ferentz 
