USC's defensive backs group struggled in 2014 in large part to injuries and inexperience but return multiple starters for this season.
USC's secondary ranked 118th in pass defense last year by allowing almost 275 passing yards per game. However, one of the strengths of the 2015 USC recruiting class was their secondary, led by Iman Marshall and Marvell Tell III. USC returns multiple players that played a significant amount last year but has to replace the team's fourth leading tackler from last year as Gerald Bowman graduated.
The most experienced defensive back on the roster is Kevon Seymour, who will start for the third straight season.