Rich Stubler began his CFL coaching career in 1983 when he joined the Hamilton Tiger-Cats, helping lead the team to a Grey Cup in 1986 as linebackers coach. In 1990, Stubler was the defensive coordinator for the Toronto Argonauts. He joined the Edmonton Eskimos’ coaching staff in 1991, winning his second league championship in 1993. Stubler's "Edge" defense was noteworthy for lining up defensive tackles and ends 1-2 yards off the line of scrimmage to offer defensive linemen better vision and tackling angles; it allowed the fewest points in their division in the 1993 season, the second fewest in the 1994 season, and the fewest in the 1995 season.
Following the 1995 season, Stubler was hired as Defensive Coordinator by University of Oregon Head CoachMike Bellotti. Bellotti, with a team fresh off appearances in the 1994 Rose Bowl and the 1995 Cotton Bowl, was intrigued by Stubler's defensive innovation. Whether due to personnel, strategy, or the differences between CFL and NCAA football, Stubler's Oregon defenses could not duplicate Edmonton's success: Oregon finished the 1996 Pac-10 season with the 9th rated defense in the conference, a 6-5 record, and did not go to a bowl; Oregon finished the 1997 Pac-10 season with the 10th rated defense in the conference, a 7-5 record, and played in the Las Vegas Bowl. Stubler resigned from Oregon prior to the Las Vegas Bowl in December, 1997.
Stubler resumed his career in the CFL, rejoining the Edmonton Eskimos from 1998 to 1999 before moving on to help the BC Lions capture the Grey Cup in 2000.
Stubler coached in the Arena Football League as the defensive coordinator for the expansion Detroit Fury from 2001 to 2002.
Canadian Football League (III)
Upon the conclusion of both AFL seasons, Stubler rejoined the Toronto Argonauts late into their seasons as a defensive consultant. In 2003 Stubler joined the Argonauts full-time as their defensive coordinator. In 2004, the Argonauts defeated the BC Lions 27–19 in the 92nd Grey Cup to give Stubler his fourth championship. On December 6, 2007, he was announced to replace the outgoing Pinball Clemons as head coach of the Argonauts for 2008. After a 4–6 start to the 2008 season, Stubler was fired as head coach of the Toronto Argonauts on September 9, 2008, and replaced with former Argonauts' head coach Don Matthews.
High school
For the 2009 off-season and the 2009 season, Stubler was hired by Cedaredge High School, the small public high school of Cedaredge, Colorado, as head coach. Stubler explained his choice for the no-name football team with needing a break. The team, which had shown weak performances in previous years, finished the season with Stubler with 2 wins out of 10 games.
Canadian Football League (IV)
On March 21, 2010, it was announced that Stubler had accepted a defensive line coaching position with the BC Lions. For the 2011 season, Stubler returned for his third stint with the Eskimos, as the team's defensive coordinator. He then returned to the Lions for the 2012 and 2013 seasons, this time as the team's defensive coordinator. On December 19, 2013, Stubler was announced as the defensive coordinator for the Calgary Stampeders. He won his fifth Grey Cup championship as the Stampeders won the 102nd Grey Cup in 2014. He also spent the 2015 season with the Stampeders before moving on to the Toronto Argonauts for the 2016 season. On January 3, 2018, Stubler became the special adviser to defensive coordinator Kahlil Carter for the Montreal Alouettes for the 2018 CFL season. Following Carter's pre-season reassignment, he was then named the team's defensive coordinator. On December 17, 2018 was hired as the defensive coordinator of the BC Lions, a role he held in 2000.
