Ottawa Redblacks' Tristan Jackson (38) runs the ball against the Calgary Stampeders during the first half of a CFL football game in Ottawa on July 8, 2016. Neither the Ottawa Redblacks nor the Calgary Stampeders were particularly happy after their previous meeting in Week 3 of this CFL season. The football teams played to the league???s first tie in seven years. The league-leading Stampeders host the division-leading Redblacks on Saturday at McMahon. Calgary wants to protect several current streaks while Ottawa wants to gain breathing room atop the East Division. THE CANADIAN PRESS/Justin Tang