Pete Mangurian's time at Columbia was characterized by a lack of success on the field. Despite a somewhat promising start—after going 1-9 in 2011, the Lions went 3-7 in Mangurian's first season, and were a few plays away from going 6-4—Columbia lost its last 21 games with Mangurian at the helm. The program also drew a lot of negative attention from national media and strong criticism from many former players.
In late November, University President Lee Bollinger—who wrote a letter to the editor defending Mangurian and Athletic Director M. Dianne Murphy in Nov. 2013—announced in an email to the Columbia Football Players Club that former college football head coach and athletic director Rick Taylor would be brought in to assess the program. Meanwhile, alumni continued to call for Mangurian's ouster.
On Dec. 4, a letter surfaced in which players accused Mangurian of a laundry list of abuses. The next day, Mangurian resigned.