Kansas State's defensive coordinator search is now official.
Chris Cosh is headed to South Florida.
Cosh served as defensive coordinator and linebackers coach for the Wildcats since 2009. Kansas State improved in a big way in 2011, cutting almost 100 yards per game off of its rushing defense to rank 37th nationally.
Holtz and Cosh worked together as assistants at South Carolina under Lou Holtz from 1999-2003. In all, Cosh has been a defensive coordinator for 15 of his 28 seasons as an assistant, with stops as well at Maryland, Michigan State and Illinois.
It's clear that Brent Venables won't be heading back to Kansas State, but Bill Snyder's got a big void in his staff to fill with Cosh's exit.