He played college football at Fresno State and was signed by the Carolina Panthers as an undrafted free agent in 2022.
He attended Sanger Union High School and was a two-way starter, playing at wide receiver on offense and cornerback on defense.
[1] After graduating from Sanger, Mosby committed to Fresno State University and played in every game as a true freshman, mainly as a special teamer.
His one interception was returned 95 yards for a touchdown against San Jose State and was the fourth-longest in team history.
Playing defensive end, Mosby started 12 games out of 13 and was named an honorable mention All-Mountain West Conference.
[19] On August 24, 2024, in the preseason finale against the Baltimore Ravens, Mosby strip-sacked rookie quarterback Devin Leary, which was recovered by teammate Anthony Johnson Jr. for a touchdown.