The CFL has announced its National Combine and three regional Combines schedule, as well as the rosters for each one.

The Canadian Football League (CFL) announced that the League will once again host three regional combines with the participating players having one final opportunity of earning an invitation to the 2017 National CFL Combine presented by adidas, which will take place in Regina, March 23-25.
For the first time in its history, the CFL Combine will head west to Regina as a part of the broader CFL Week festivities.
The CFL will host regional combines for the fifth consecutive year with the trio beginning in Montreal for the Eastern Regional, Toronto for the Ontario Regional and Regina for the Western Regional.
Last year, 17 players from regional combines were extended an invitation to the National CFL Combine.The CFL, with input from all teams, will then invite additional players from the regional combines to the national Combine in Regina depending on player performance. Each regional combine will invite approximately 40 to 45 football players.
The top players eligible for the upcoming 2017 CFL Draft, as ranked collectively by the teams and the league office, are invited to attend the national CFL Combine presented by adidas.

http://www.ottawaredblacks.com/2017/...-participants/