|Date of birth||November 26, 1999|
|Place of birth||Port Williams, Canada|
|Height||5 ft 10 in (1.78 m)|
|Valley United SC|
|2016||Black Rock FC|
|2019–||Toronto FC II||15||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 2 October 2019|
After playing youth soccer for Valley United SC and Team Nova Scotia, Shaffelburg played for the Boy's soccer team at Berkshire School in high school. After appearing in a friendly for HFX Wanderers FC in 2018, Shaffelburg began the 2019 season with Toronto FC II in USL League One.
Shaffelburg made his first appearance for Toronto FC in the 2019 CONCACAF Champions League on February 19, 2019 and then signed with Toronto FC as a Homegrown Player on June 21, 2019. He made his first MLS appearance the following day, playing 31 minutes against FC Dallas in Frisco, Texas. Four days later on June 26 he had his first start for Toronto FC at BMO Field scoring an assist in a 3-2 win against Atlanta United FC, setting up the fastest goal in TFC history only 29 seconds into the game. Shaffelburg would quickly find himself in the starting lineup shortly after signing, earning rave reviews for his pace from the coaching staff.
- Wharnsby, Tim (28 June 2019). "Nova Scotia teen Jacob Shaffelburg impresses in starting debut for TFC". Toronto Star (published 29 June 2019). pp. S6. Retrieved 29 June 2019.
- "Canada - J. Shaffelburg - Profile with news, career statistics and history - Soccerway". ca.soccerway.com. Retrieved 2019-05-13.
- Thompson, Ashley (11 August 2018). "Living the Dream: 'He has his eyes set on mastery'". Kings County News. Retrieved 10 August 2019.
- "Toronto FC sign forward Jacob Shaffelburg to Homegrown Player deal". mlssoccer.com. Retrieved 2019-06-23.
- Willy Palov (August 2, 2019). "Shaffelburg on soccer fast track with Toronto FC". The Chronice Herald.
- "Game Detail". Concacaf Champions League. CONCACAF. Retrieved 29 June 2019.
57' - Jacob Shaffelburg enters the pitch for Toronto FC
- "Port Williams' Shaffelburg signs first-team deal with Toronto FC". The Chronicle Herald. Halifax, Nova Scotia. 21 June 2019. Retrieved 29 June 2019.
- Buffery, Steve (23 June 2019). "Jacob Shaffelburg climbs the ladder and gets his first taste of MLS action". Toronto Sun. Retrieved 29 June 2019.
- Wharnsby, Tim (26 June 2019). "Toronto FC over Atlanta in a wild ride of late penalty kicks and record fast goals". The Globe and Mail. Toronto. The Canadian Press. Retrieved 29 June 2019.
- Neil Davidson (August 2, 2019). "Teenage winger Jacob Shaffelburg rapidly making his name at Toronto FC". Toronto Star.
- Soccerway. "Jacob Shaffelburg profile".