Stingley enrolled at Purdue University in 1989, where he intended to play both football and baseball. However, he soon decided that he was too small, at just 5' 10" tall and 150 pounds, to play football in the Big Ten Conference. So he decided to leave Purdue and attended two smaller, junior colleges, located in Illinois. Finally graduating from Triton College.
Professional playing career
Stingley was selected by the Philadelphia Phillies in the 1993 Major League Baseball Draft. He played in the Phillies organization for three seasons before deciding to play professional football. He began his professional football career playing for the Louisiana Bayou Thunder, a semi-pro football team. He was then signed to play in the Arena Football League by Mike Hohensee, then-head coach of the Albany Firebirds. On June 14, 1998, Stingley was on the receiving end of a hard hit by Thomas Orr of the New York CityHawks that left him unconscious for 10 minutes, many believing that Stingley, like his father, had been paralyzed by the hit. However, he soon recovered. Coincidentally, his father was in attendance at that game. As a result, he did miss one game, suffering a concussion from the hit. In 1999, Stingley was signed to the New York Jets' practice squad. However, he was released by the team after just three practices. On January 15, 2002, Stingley was waived by the Chicago Rush. In February 2003, Stingley signed with the Carolina Cobras.
Stingley began his coaching career with the Macon Knights of the af2, the Arena Football League's minor league, in 2005 as a defensive coordinator, but was promoted to head coach midway through the season. He coached the Knights for two seasons and was able to turn around a losing 2–4 record, finishing the 2005 season at 8–8 and making the playoffs. In the 2006 season, the team again finished 8–8, just missing the playoffs by one game. After spending two seasons with the Knights, he was hired as the head coach of the South Georgia Wildcats, after the firing of coach Donnie Davis and a 3–13 season. In 2007, his first season with South Georgia, Stingley recorded a 10–6 record and advanced to the second round of the playoffs. In his second and final season with the Wildcats, he was named the 2008Coach of the Year after the Wildcats finished with a 12-4 record, winning their final seven games to close out the regular season and captured first place in the league's South Division. The team also finished in the top ten in several statistical categories, including scoring defense, rushing defense and interceptions. While a head coach in af2, his overall record was 37 wins and 25 losses, a winning percentage of.597, including three postseason appearances. On November 17, it was announced that Stingley had signed with the Bossier-Shreveport Battle Wings to become the team's defensive coordinator.
Arena Football League
On September 16, 2008, he was hired by the New Orleans VooDoo as their new defensive coordinator. On October 15, 2008, the VooDoo announced that the team was ceasing operations resulting in Stingley's contract being nullified. On September 16, 2010, he was hired by the reformed VooDoo as their head coach until June 26, 2011, when he was released during his first season. On May 21, 2012, he was named the head coach of the AFL's Pittsburgh Power. Stingley was announced as the first head coach of the Shanghai Skywalkers of the China Arena Football League in June 2016. The CAFL played one season in 2016 and all subsequent seasons have since been postponed. During the CAFL hiatus, he was also the head coach of the Georgia Doom of the American Arena League for four games in 2018.
Personal
Stingley is the youngest child of Darryl and Tina Stingley. He currently resides in Baton Rouge, Louisiana along with his wife Natasha and their four children Isis, Nahjha, Derek Jr., and Sanaa. Today he is the head coach of The Dunham School 7–8th grade football team.