It may have been a pretty clever tactic .
Was n't enough to stave up a monumental upset as Iowa , a 21 - point underdog , knocked off # 3 Michigan with a last - second field goal , winning 14 - 13 .
It may have been a pretty clever tactic , but was n't enough to stave up a monumental upset as Iowa , a 21 - point underdog , knocked off # 3 Michigan with a last - second field goal , winning 14 - 13 .