Originally Posted by Ænima:
“Similar to Wimbledon, they still use the refs, but if a manager disagrees, they use one of their challenges, and they view the replays. I think it'd be a good system.”
It would certainly be better than the system they have at the moment, none.
They could use a challenge, review the tape (we can see it 5 seconds after happening so the referee must have access to that too) and then if the referee is totally happy, reverse the decision. Would have given Mexico 2 goals in this game and wasted less than a minute of game time. As you say, it works in other sports also.