Brett Diersen
Brett Diersen

Assistant Coach/Defensive Line/Recruiting Coordinator

2nd Season at NIU

Alma Mater, Year:
Huron (S.D.), 1998


Huskies Open Spring Football Practice Tuesday

Individual development key to team growth


Huskies By Position: Huskie Defensive Line

Younger players ready to step up and show their wares


NIU Huskies 2013 - Spring Practice Notes

Practice #1


NIU's Carey Adjusts Coaching Staff Duties

New Faces and New Roles for Huskie Coaches


NIU Signing Day Reception Scheduled for February 6

Hear About the Newest Huskies Prior to NIU-Bowling Green Men's Basketball Game


Weekly Football Press Conference: Eastern Michigan

Week 9 football press conference with Head coach Rod Carey and players Perez Ford, Matt Krempel and Dechane Durante.


Northern Illinois Dominate Purdue, 55-24

Highlights from the Huskies historic 55-24 win over the Boilermakers at Ross-Ade Stadium.


NIU defeats Iowa, 30-27

NIU rallied for a 30-27 victory over Iowa Saturday.

Brett Diersen, a defensive line coach with extensive Midwest ties, enters his first season as defensive line coach at Northern Illinois University in 2013.

Diersen spent the 2012 season at Florida Atlantic University where he coached the Owls' defensive line and served as special teams coordinator under head coach Carl Pelini. In 2011, he was the defensive ends coach and recruiting coordinator at Indiana after spending the 2008-10 seasons on the University of Nebraska coaching staff, where he assisted with the defensive line and special teams.

The connection between Carey and Diersen dates back to the 2000 season, when Carey took over as offensive coordinator and offensive line coach at Wisconsin-Stout, where Diersen was a graduate assistant on a Blue Devils team that went into the Division III playoffs undefeated. After coaching the defensive line, outside linebackers and special teams at the University of Dubuque from 2001-03, Diersen returned to UW-Stout as defensive coordinator in 2004 and was reunited with Carey. The two remained with the Blue Devils through 2006.

Diersen spent the 2007 campaign as defensive line coach at Minnesota State-Mankato before going to Nebraska the next season. He was on the Cornhuskers' defensive staff for three seasons and Nebraska ranked in the Top 10 nationally in pass efficiency defense, passing defense and scoring defense in 2010 and led the nation in scoring, pass efficiency and red zone defense in 2009 behind Suh, who was named the Associated Press National Player of the Year and won the Bronko Nagurski, Rotary Lombardi, Outland and Chuck Bednarik awards.

The Appleton, Wis. native spent the 2011 season as recruiting coordinator and defensive ends coach at Indiana before re-joining Pelini's staff at Florida Atlantic in 2012.

As a player, Diersen was a three-time all-conference defensive end at Huron (S.D.) University from 1994-98, where he earned his bachelor's degree in 1998. He added a master's degree in education from UW-Stout in 2005.


2013- Northern Illinois (Defensive Line)
2012 Florida Atlantic (DL/Special Teams)
2011 Indiana (Recruiting Coord./DE)
2008-10 Nebraska (Intern/DL & Special Teams)
2007 Minn. St.-Mankato (Defensive Line)
2004-06 Wisconsin-Stout (Def. Coord./DL/DBs)
2001-03 Dubuque (DL/OLB/Special Teams)
1998-2000 Wisconsin-Stout (Graduate Assistant)


2010 Holiday Bowl (Nebraska)
2009 Holiday Bowl (Nebraska)
2009 Gator Bowl (Nebraska)
2000 Division III Playoffs (Wisconsin-Stout)


1994-98 Huron (S.D.) (Defensive End)


College B.S., Huron (S.D.), 1998
M.S., Wisconsin-Stout, 2004
High School Fox Valley Lutheran, 1994


Birthdate June 6, 1976
Birthplace Appleton, Wis.
Hometown Appleton, Wis.
Family Wife, Jenna, infant son, Brody