Haack threw seven passes this season before his appearance last week against Louisiana-Monroe. He replaced Broadway, who is one of only three quarterbacks in school history to throw for more than 5,000 yards and run for another 1,000 during a career.
Broadway is out indefinitely because of a fractured an bone above the wrist, which he suffered in the fourth quarter of last Saturday’s 31-28 loss to ULM.
UL (8-3, 5-1) needs a win over South Alabama (5-6, 3-3) to claim the school’s first outright Sun Belt Conference football championship.
A loss by the Ragin' Cajuns means that UL will share the conference championship with Arkansas State, which ended the regular season with a 5-2 league record.