In his debut for the Rams, Dheilly tied the school's single-game sack record with three.[3] He finished the season with 30 tackles, four sacks and an interception, being named the Canada West Universities Athletic Association Rookie of the Year.[5] The following season, he earned league all-star honors after posting 26 defensive tackles and 6.5 sacks.[5] Dheilly left the Rams in 2018 for the Okanagan Sun of the Canadian Junior Football League (CJFL), recording eight sacks on his way to being named a conference all-star.[5]
In 2019, Dheilly returned to U Sports football by committing to the Saskatchewan Huskies, for which he had initially decided to play with in 2016 before changing his mind.[4] In one season there, he tallied 24 defensive tackles, a team-leading 9.5 TFLs and six sacks, as well as one interception.[5][6] He was named a Canada West All-Star for his performance.[6] Despite having two years of eligibility left, Dheilly opted to declare for the 2020 CFL Draft.[5]
Professional career
Dheilly was selected in the fifth round (46th overall) of the 2020 CFL Draft by the Winnipeg Blue Bombers; the 2020 season was cancelled due to the COVID-19 pandemic.[7][8] He made the team in 2021 and played in four regular season games, recording one tackle on special teams.[9] He was released on November 1.[10]
On November 11, Dheilly was signed by the Saskatchewan Roughriders and was placed on the suspended list.[11] He appeared in no games for the Roughriders in 2021.[12] He was re-signed after the season on December 14.[13] He made the final roster for 2022.[14] Dheilly appeared in seven games during the 2022 season, posting three total tackles before being sidelined by an injury.[12][15] He returned and made the team for the 2023 season.[16] He announced his retirement on August 1, 2024.[17]