After being drafted by the Saskatchewan Roughriders in the 2013 CFL draft Vonk was released following training camp and returned to the University of Waterloo to complete his college eligibility. He played wearing a cast as he had broken his hand in a scrimmage early in the season.[3][4] He returned to the Roughriders in 2014 and made his professional debut on August 2, 2014. In three seasons with the Riders Vonk played in 27 games, starting 9.
Montreal Alouettes
On June 7, 2017, Vonk was traded to the Montreal Alouettes in exchange for defensive back Denzel Radford.[5] In his first season in Montreal Vonk played in nine games, before tearing his ACL ending his season. Vonk was released by the Alouettes on April 17, 2018, as his knee was not ready for the upcoming season.[6]
↑Ramirez, Eduardo (29 November 2013). "Season in Review: Football". Imprint, The University of Waterloo's Official Student Newspaper. Archived from the original on 5 August 2016. Retrieved 13 June 2016.