Cline signed with the Indianapolis Colts as an undrafted free agent following the 2020 NFL draft on April 29, 2020.[3] He was waived during final roster cuts on September 5, 2020,[4] and signed to the team's practice squad the next day.[5] He was elevated to the active roster on November 28 for the team's week 12 game against the Tennessee Titans where he recorded his first career tackle in the NFL and reverted to the practice squad after the game.[6] On January 10, 2021, Cline signed a reserve/futures contract with the Colts.[7]
On August 31, 2021, Cline was waived by the Colts and re-signed to the practice squad the next day.[8][9] He signed a reserve/future contract on January 10, 2022.[10]
On August 30, 2022, Cline was waived by the Colts and signed to the practice squad the next day.[11][12] He was promoted to the active roster on December 31.[13] He was waived on May 4, 2023.[14]
Buffalo Bills
On May 5, 2023, Cline was claimed off waivers by the Buffalo Bills. He was waived on August 29, 2023, and re-signed to the practice squad.[15][16] He signed a reserve/future contract on January 22, 2024.[17]
On August 27, 2024, Cline was released by the Bills as part of final roster cuts, and re-signed to the practice squad.[18][19] He was released on December 17.[20]
New York Jets
On December 24, 2024, Cline was signed to the New York Jets practice squad.[21]
Buffalo Bills (second stint)
On July 31, 2025, Cline signed with the Buffalo Bills, but was waived four days later.[22]
