Matlock began his coaching career as an assistant coach at Eastern Hills High School in Fort Worth, Texas. In 1996, Matlock became the head coach of Eastern Hills where he won multiple district championships and Coach-of-the-Year honors. In 1999, Matlock left Eastern Hills to start the Flower Mound High School program from scratch.[1] On July 15, 2004, Matlock joined the TCU Horned Frogs baseball program as a volunteer assistant coach.[2]
After two seasons at TCU, Matlock joined the Texas State program as the team's recruiting coordinator and pitching coach. While at Texas State, Matlock helped develop Paul Goldschmidt into an eighth-round draft pick.
National champion
Postseason invitational champion
Conference regular season champion
Conference regular season and conference tournament champion
Division regular season champion
Division regular season and conference tournament champion
Conference tournament champion