Over the past several years the referees have made blatantly bad calls which resulted in changing the outcome of games. Some games have several blatant no calls and blatant ghost calls. With the ref smirking in the Patriots game against KC while he made numerous bad calls against the Patriots and allowed numerous pass interferences and offensive pass interferences by KC. Then the refs blatantly whistle a play dead on a recovered fumble to stop the Patriots from scoring. That play would have resulted in a touchdown. Then the refs called a Patriots player out on a CLEAR touchdown. These refs are changing the outcomes of games for many teams. It is time for the teams to be able to challenge, have someone review multiple missed or bad calls and determine whether or not the current referees in the game should be allowed to continue officiating that game. This will keep refs on their toes and hold them accountable, forcing them to do their jobs accurately and without bias. It is time to stop allowing the mistakes and/or agendas of the refs determine who wins the games. A lot of money is spent to watch these games and gamble on them. The teams performance should be the only thing determining the winner.