How Lincoln Riley to USC and college football's coaching carousel impact recruiting

College football's coaching carousel always creates chaos on the recruiting trail given the timing and impact coaches make on recruits.

This year has been no different with Lincoln Riley leaving Oklahoma for USC, Florida firing Dan Mullen and LSU announcing in October that Ed Orgeron will not return after this season.

The departures have left holes at some schools, and in USC's case, has created some instant excitement from prospects.

Here is a look at where some of the higher-profile schools stand in recruiting with new hires and departures within their respective programs.

Previous coach: Clay Helton (fired Sept. 13)
New coach: Lincoln Riley (hired Nov. 28)

Riley's hiring is very likely the best outcome the Trojans could have hoped for after firing Helton. Riley made it to the College Football Playoff four times at Oklahoma and has been recruiting at a high level for the Sooners.