Prior to Stanford

  • Played at Magnolia West High School in Magnolia, Texas for head coach Ben McGehee
  • Ranked No. 41 nationally by ESPN at the inside linebacker position
  • Lands at No. 8 by On3 for inside linebackers in the state of Texas, with a composite ranking of No. 10 by 247Sports
  • Also lettered in track and field in high school, where he did shot put
  • Played on both sides of the ball at Magnolia West, but stood out with 282 total tackles at the varsity level, with 18 tackles for loss and 7.5 sacks
  • Added 37 receptions, 527 receiving yards, and 12 total touchdowns on offense
  • First All-County
  • Academic All-District award


  • Son of Joe and Wendy Mattingly
  • Has one older sister, Emma and one younger brother, Luke
  • Father played football collegiately at Adams State
  • Interested in studying Industrial Management