Heiligh attended Venice High School in Venice, Florida. He would set Florida state high school records in his senior year. He broke the records for career receiving yards and the single season records for catches, yards, and touchdowns. His final stats for the year were 32 touchdowns, 2,359 yards and 131 receptions.[2] Heiligh and fellow Coastal Carolina quarterback Bryce Carpenter led Venice to a state championship.[3] Heiligh was a three-star recruit and he committed to Coastal Carolina University.
College career
In four years at Coastal Carolina, Heiligh played in 45 games totaling 191 catches, 2,825 yards, and 22 touchdowns.[4] He was named to the First-team All-Sun Belt twice in 2020 and 2021 during his junior and senior seasons.[5][6] In 2020, Heiligh set a Cure Bowl record tallying 13 catches in the 2020 edition of the bowl.[7] He helped lead Coastal Carolina to their first ever bowl victory in the 2021 Cure Bowl in a 47–41 win.[8] In the game, Heiligh became the Coastal Carolina leader in receiving yards in a season.[9] Heiligh entered the 2022 NFL draft at the end of his collegiate career.