Maruo originally participated in the 2020 CFL Global Combine, but he was under contract with the Challengers, and could not play in the CFL.[5] Instead, he returned in 2021 where he was selected with the fourth overall pick in the 2021 CFL Global Draft by the Winnipeg Blue Bombers and signed with the team on April 26, 2021.[6][7]
Following training camp, Maruo made the team's active roster and made his CFL debut in week 1 against the Hamilton Tiger-Cats on August 5, 2021.[8] He played in the team's first seven games where he had six special teams tackles before shifting to the practice roster for the remainder of the year.[8][9] While he didn't play in the game, Maruo became a Grey Cup champion when the Blue Bombers defeated the Tiger-Cats in the 108th Grey Cup.[10] He re-signed with the Blue Bombers on December 28, 2021.[11]
In 2022, Maruo again made the team's opening day roster and began to see more playing time on defense.[8] He recorded his first career sack on July 22, 2022, in a game against the Edmonton Elks when he tackled Taylor Cornelius.[12] He played in 17 regular season games that year where he had 14 defensive tackles, seven special teams tackles, and one sack.[8] He also played in both postseason games, including the 109th Grey Cup, where he recorded two special teams tackles in the loss to the Toronto Argonauts.[8]
Edmonton Elks
Maruo was signed to the practice roster of the Edmonton Elks on July 7, 2024.[13]