The gap at the top of the Premiership may already be insurmountable for Rangers but Barrie McKay insists they can at least turn the tables on Celtic for 90 minutes tomorrow. The winger believes he and his team-mates have let themselves down in the two previous Old Firm meetings this season, having lost 5-1 at Celtic Park in the opening league game between the sides and then 1-0 in the Betfred Cup semi-final at Hampden.