Cantwell has great size at 6'4, 210-pounds, as well as a great arm. As a three-year starter, Cantwell displayed great accuracy and finished his career at Paducah Tilghman ranked in the top ten in the state for career completion percentage.
As a senior, Cantwell completed 62% of his attempts, throwing for 1,788 yards and 20 touchdowns, while helping guide Tilghman to the Class AAA semifinals before losing 35-21 to eventual champion Boyle County.
During his time behind center at Paducah Tilghman, Cantwell racked up career numbers of over 6,700 passing yards and 67 touchdowns.
He was an AP All-State honorable mention choice, as well as a 3rd Team All-State selection by the Louisville Courier-Journal. The Lexington Herald-Leader listed Cantwell as one of the top 50 prospects in the state this past season.