“I’m betting on the surgery to be under four hours, and I’m betting on a speedy recovery,” he joked to the Review-Journal. “The over-under on me being in the hospital is seven days, and I think I’ll be out in five. Original article: https://www.reviewjournal.com/sports/betting/high-stakes-sports-bettor-mattress-mack-to-have-open-heart-surgery-3223937/