the bet to get a stable income. For example, if the player bets on more than 4.5 total yellow cards at a coefficient of 1.9, a win is enough for the referee to pay. At least 5 bookings. If bet is (3.5), 4 yellow cards in the match are sufficient. เว็บไซต์แทงบอล Another good approach is the Kelly Strategy criterion as it has complete statistics of team totals and referees.