The biggest gridiron football game this Sunday is at Commonwealth Stadium in Edmonton, Alberta, Canada. Vying for the 106th Grey Cup are the Calgary Stampeders and Ottawa Redblacks, a rematch two years removed from a stunning upset that saw the sub-.500 Redblacks knock off the 15-2-1 Stampeders in a 39-33 overtime classic back in 2016. Last year, Calgary returned to the Grey Cup, and had one of the craziest ways to blow a game that you’ll ever see. Eastern Washington alum Bo Levi Mitchell, already in comfortable field goal range while down 27-24 to the Toronto Argonauts, got greedy and was intercepted at the goal-line in the closing seconds.