|Coaching career (HC unless noted)|
|Administrative career (AD unless noted)|
|Head coaching record|
|Accomplishments and honors|
1 WAC (1992)
2× WAC Coach of the Year (1989, 1992)
Wagner, a longtime assistant under Dick Tomey at Hawaii, took over the head coaching position when Tomey left to take the Arizona Wildcats head coaching job. While head coach at Hawaii, Wagner led the Rainbow Warriors to their first WAC title in 1992. During most of Wagner's tenure at Hawaii, his offensive coordinator was current Georgia Tech head coach Paul Johnson. Despite Wagner's overall success, he was let go after a 4–8 season in 1995, and replaced by former Bill Walsh assistant, Fred von Appen.
Wagner was out of coaching for a few years, but after the 1997 season ended, Wagner agreed to take over the defensive coordinator position for TCU under new coach Dennis Franchione. However, his old mentor Dick Tomey called, asking if he wanted to take over an assistant position on his staff. Wagner gladly accepted and ended up coaching inside linebackers for Arizona.
Head coaching record
|Hawaii Rainbow Warriors (Western Athletic Conference) (1987–1995)|
|National championship Conference title Conference division title|
|#Rankings from final Coaches Poll.
°Rankings from final AP Poll.
- Reardon, Dave (February 28, 2008). "UH interviews Wagner". Star Bulletin. Retrieved November 9, 2014.
- Lewis, Fred (June 22, 2005). "BCS courts Wagner, Yoshida". Honolulu Advertiser. Retrieved November 9, 2014.
- Arnett, Paul (November 17, 1999). "’Bows examining their options". Star Bulletin. Retrieved November 9, 2014.
- Arnett, Paul (December 16, 1999). "Wagner wants back as defensive coordinator". Star Bulletin. Retrieved November 9, 2014.
- Durrenberger, Charles (September 2, 1998). "Arizona’s Ex-Rainbow Coalition". Tucson Citizen. Retrieved November 9, 2014.
- Hansen, Greg (August 17, 1998). "Wagner Turns a Negative into Positive". Arizona Daily Star (Star Bulletin). Retrieved November 9, 2014.
- Durrenberger, Charles (August 31, 1998). "Past comes alive". Tucson Citizen. Retrieved November 9, 2014.
- "Wagner to retire as KS Hawaii athletic director". Hawaii 24/7. April 16, 2012. Retrieved November 9, 2014.
- "Former UH coach to join Kamehameha Schools". Honolulu Advertiser. July 11, 2002. Retrieved November 9, 2014.