It starts with the greatest quarterback of all time, who’s never lost to the Dallas Cowboys. When the Dallas Cowboys lost Dak Prescott for the season early in 2020, it put a hold on fully evaluating Mike McCarthy as the right head coach to get the Cowboys deeper into the playoffs. Fast forward to week one of 2021, and a healthy Prescott is making his return against the defending Super Bowl champion Tampa Bay Buccaneers and Tom Brady. Some considered this game the start of a reset year for McCarthy, and at the end of four quarters all of the…