"I've got (Marcus) Mariota one, because I believe in Mariota, but the other piece of that is, with Jameis Winston I've got trust issues both on and off the field. Do I trust him with the football on the field, given the way he turned the ball over, especially this year with 18 interceptions?
It could have been 40 very easily," Mayock said.
"Can I trust him with the ball, which is the most important thing during an NFL game. And two, can I trust him off the field? To me, those red flags are significant enough that my answer is, I would go the other way with Mariota."