'Fail Mary' in mind, Bears CB Tyrique Stevenson still seeking consistency

Bears cornerback Tyrique Stevenson mentions the “Fail Mary” before you have a chance to. One mistake, he said, can get you cast aside by the rest of the NFL. He’s lived it. “One play could just … As far as injury, as far as mistakes, as far as anything, this league will forget about you in a heartbeat,” he told the Sun-Times earlier this week. “For me, it’s just constantly sitting on my brain every time I touch the field — ‘Just go out there and lay it on the line and stay focused.’ “I think…