He played college football at Rice and SMU before being selected by the Colts in the fourth round of the 2021 NFL draft.

Granson was born in DeMotte, Indiana, and grew up in Austin, Texas, where he attended Westlake High School.

[3] Granson left the program following the firing of Rice head coach David Bailiff and enrolled at Austin Community College, hoping to join the Texas Longhorns as a walk-on.

[2] As a redshirt junior, he caught 43 passes for 721 yards and nine touchdowns and was named second-team All-American Athletic Conference (AAC).

[4] He was named first-team All-AAC after finishing his redshirt senior season with 35 receptions for 536 yards and five touchdowns.