Bellamy signed with the Houston Texans as an undrafted free agent on May 11, 2018.[5] He was waived on September 1, 2018, and was signed to the practice squad the next day.[6][7] He signed a reserve/future contract with the Texans on January 7, 2019.[8] The Texans waived him on August 31 during final roster cuts.[9]
Cincinnati Bengals
On September 27, 2019, Bellamy was signed to the Cincinnati Bengals practice squad.[10] His practice squad contract with the team expired on January 6, 2020.[11]
Houston Texans (second stint)
On January 6, 2020, Bellamy was signed to the Houston Texans practice squad.[12] He signed a reserve/future contract with the Texans on January 13, 2020.[13]
On September 5, 2020, Bellamy was waived by the Texans and signed to the practice squad the next day.[14][15] He was placed on the practice squad/injured list on November 9 after having a benign cyst drained.[16] His practice squad contract with the team expired after the season on January 11, 2021.[17]
Bellamy was selected with the first pick of the second round of the 2022 USFL draft by the New Orleans Breakers.[23] Bellamy was awarded Week 1 Defensive Player of the Week after his six-tackle, three-sack performance against the Philadelphia Stars.[24] He was ruled inactive for the team's game against the Houston Gamblers on May 8, 2022.[25] The Breakers moved Bellamy back to the active roster on May 12.[26] He became a free agent when his contract expired on December 31, 2022.