His legacy in Canadian football, marked by grit and grace, will endure in our hearts. His journey may have ended, but his spirit carries on in every game, every tackle, every touchdown.

He was a professional Canadian football running back in the Canadian Football League (CFL). He was a three-time Grey Cup champion after winning with the Edmonton Eskimos in 2005 and the Montreal Alouettes in 2009 and 2010. He played for ten seasons in the CFL, primarily with the Alouettes, and also spent time in the National Football League with the San Diego Chargers, Green Bay Packers, and Washington Redskins.

After having his enlarged spleen removed in August 2015 and multiple rounds of chemotherapy, Diedrick underwent a stem-cell transplant in June 2016 with his daughter, Dominique, serving as the donor. As of September 2017, his health returned and he spent the 2017 season as a strength and conditioning coach for the Toronto Argonauts. Diedrick died at Toronto General Hospital on June 24, 2023, at the age of 44.