Merrill was signed by the Los Angeles Chargers as an undrafted free agent on May 1, 2021.[3] He made the initial 53-man roster, but was waived on September 1, 2021, and then re-signed to the team's practice squad.[4][5] Merrill was promoted to the Chargers' active roster on October 4, 2021.[6] He was waived on October 30 and re-signed to the practice squad.[7] He signed a reserve/future contract with the Chargers on January 11, 2022.[8]
On August 15, 2022, Merrill was waived/injured by the Chargers.
Seattle Seahawks
On May 15, 2023, Merrill was signed by the Seattle Seahawks.[9] He was released on June 2.[10]
Denver Broncos
On August 5, 2023, Merrill signed with the Denver Broncos.[11] He was waived by the team on August 16.[12]
