These statistical Referee Players Bookings Tips have been collected from all matches in BetTheBuilder and sorted by the highest average yellow cards. In other words, you will be able to see players who were booked the most by the referee in charge for the upcoming game. They work best for league matches when everything is still to play for and the teams’ focus is on that competition. It’s recommended to research these statistical selections further (e.g. check for starting line ups, injury news, team tactics, morale, etc.) before choosing to follow these tips.