Thurman spent two seasons with the Calgary Stampeders of the Canadian Football League. Playing in all 18 regular season games during his rookie season in 2017, Thurman recorded 52 tackles, as well as 13 more special teams tackles, a sack, two interceptions, and two forced fumbles. Calgary made it to the 105th Grey Cup, but lost the championship game to the Toronto Argonauts. Thurman recorded 7 tackles during the game, and also sacked Argos quarterback Ricky Ray. The 2018 season again ended with a trip to the Grey Cup; this time it was a victory. Calgary's win in the 106th Grey Cup was the organization's 8th title. In that game, Thurman had two more tackles and a forced fumble, while overall on the year he played in 17 games, upping his tackles to 82 defensive tackles, 16 specials teams tackles, two more sacks, an interception, and a forced fumble.
Chicago Bears
Thurman signed with the Chicago Bears in January 2019.[1] Thurman managed 16 tackles during the preseason, but did not make the roster, being waived on August 31, 2019.[2]
DC Defenders
In October 2019, Thurman was selected by the DC Defenders in the 2020 XFL Draft.[3] Despite the season ending after 5 games due to the COVID-19 pandemic, Thurman made 28 tackles, an interception, and forced a fumble.[4]Pro Football Focus listed Thurman as one of the highest graded players.[5] He had his contract terminated when the league suspended operations on April 10, 2020.[6]
Calgary Stampeders (second stint)
On January 19, 2021, it was announced that Thurman had re-signed with the Stampeders.[7] He played for two seasons with the Stampeders and became a free agent upon the expiry of his contract on February 14, 2023.[8]
Hamilton Tiger-Cats
On February 15, 2023, it was announced that Thurman had signed with the Hamilton Tiger-Cats.[9] He started all 18 regular season games where he recorded a career-highs with 98 defensive tackles and five sacks along with two interceptions and two forced fumbles.[10] He became a free agent upon the expiry of his contract on February 13, 2024.[11]