In 2020, Machino appeared at the CFL Global Combine in Japan.[5] CFL director of global scouting Greg Quick was impressed by Machino's performance, stating “Not only did Tomoya stand out physically, but his agility for a man of his size was outstanding. He had the best shuttle time of all the o-linemen and showed that he can pull and move extremely well.”[5]
Machino was selected by the Winnipeg Blue Bombers in the second round, with the 15th overall pick, of the 2021 CFL global draft.[6] He officially signed with the team on June 15 and was placed on the practice roster on July 31.[7] Machino's roster status in the CFL was "Global".[2] On December 12, 2021, the Blue Bombers won the 108th Grey Cup against the Hamilton Tiger-Cats by a score of 33–25.[8] Machino was released on December 13, 2021.[7]
Machino later re-signed with Winnipeg on April 27, 2022, and was placed on the practice roster again on June 5.[9] He was promoted to the active roster for the first time on August 24, and dressed for the week 12 game against the Calgary Stampeders.[9][2] He was moved back to the practice roster on August 31.[9] Machino was promoted to the active roster for the second time on October 14, and dressed for two games, before being placed on injured reserve on November 12, 2022.[9][2]
Machino was moved back to the practice roster again the next year, on June 4, 2023.[10] He was released by the Blue Bombers on November 20, 2023.[10]