Defensive lineman Ese Mrabure-Ajufo and offensive lineman Dillon Guy are headed to Saskatchewan, per CFL sources.
The pair of Canadians were offered practice roster spots by B.C. but both declined, which allowed the Riders to add them to their active roster.
Mrabure-Ajufo, a 2015 first-round pick, played in five games and was on injured reserve for 13 games last season.
A 2016 fourth-round selection, Guy, is coming off a 2015 campaign that was cut short by a torn ACL while playing for the University of Buffalo. The six-foot-four, 308-pounder was full go for training camp. Saskatchewan brought Guy in for a pre-draft workout.