After Oklahoma State, Garrett was a broadcaster for KSPI from 1978–1986. He was a fill in play-by-play broadcaster of Oklahoma State Cowboys football games in 1985 for Bob Barry Sr. and also did spot play-by-play for OSU basketball. From 1986-87 was sports director at WKY-AM in Oklahoma City and 1987–1992 was sports talk host on KTOK in Oklahoma City and worked OU football games on the Oklahoma News Network.
Garrett became the radio play by play announcer of the New Orleans Saints in 1992. He shared the broadcast booth with Archie Manning and Jim Henderson. He also became the sports director of WQUE. Midway through the 1993 season, Garrett was relieved of his broadcasting duties after he reportedly overslept and missed a portion of a pregame show prior to a game against the Green Bay Packers.
Dallas Cowboys
Prior to the 1995 season Dallas Cowboys radio play-by-play broadcaster Brad Sham left to become the announcer for the Texas Rangers. Garrett was hired to replace Sham. While with the Cowboys Garrett shared the booth with Dale Hansen, and broadcast the Cowboys victory in Super Bowl XXX. He remained in the booth for three seasons until Sham returned to the Cowboys prior to the 1998 season.
Post NFL
Garrett later worked for Oral Roberts University as voice for both Men's and Women's basketball teams. For the 2003 season only he was the play-by-play voice for the Oklahoma Redhawks aka the Oklahoma City Dodgers of the Pacific Coast League, in late 2003 Garrett was asked not to return to the Redhawks for the 2004 season. Garrett took a job with KREF-AM 1400 from 2004-2005, in 2006 he returned to his old job as sports director at KTOK-AM and its new sister station KGHM 1340 The Game from 2006-2012, he also hosted a weekday afternoon sports show om 1340 The Game before briefly ending the show for a few months to focus on his duties as station sports director before returning the show and hosting it until he was laid off as part of nationwide layoffs at Clear Channel Communications. Garrett is currently hosting a local show called DG on the radio on KRXO-107.7 FM The Franchise. He is also currently the play-by-play broadcaster for Central Oklahoma Bronchos football and Men's and Women's basketball teams.
Personal life
Garrett has been married twice, first marriage or children from it unknown, but he often talked briefly of his first marriage on his broadcasts. Currently he makes his home in Oklahoma City, Oklahoma and is married to seconded wife, Rajeana since 2003, together they have two adopted daughters.
