Tillman attended Bishop Gorman High School in Las Vegas, Nevada and was rated as a three-star prospect during his recruitment, according to 247Sports.

[14] In the regular season finale against in-state rival Vanderbilt, he had his first multi-touchdown game as a Vol in the 45–21 victory.

[22] Tillman suffered an ankle injury in the following game against Akron that impacted his availability and production for the remainder of the season.

[31] In Week 8 of the 2024 season, Tillman recorded 99 yards and his first two professional touchdowns against the Baltimore Ravens in a 29–24 victory.

[33] Tillman was placed on injured reserve due to the concussion on December 31, ending his season with 29 receptions for 339 yards and three touchdowns.

[34] His father, also named Cedric Tillman, played in the NFL for the Denver Broncos and Jacksonville Jaguars.