 Calvin <unk> ( born November 2 , 1984 ) is a Canadian football running back for the Edmonton <unk> of the Canadian Football League ( <unk> ) . He played as a <unk> until 2014 , when he became the starting fullback for the <unk> . <unk> is known for being able to fill many roles at his position , with <unk> <unk> Chris Schultz noting in 2010 that he is a " multi @-@ purpose running back who catches the ball extremely well , blocks well and runs well " . He is a champion of the <unk> Grey Cup . 
