除了樓上幾位說的主觀原因以外,MLB的規則9.02 ( a )明確的規定裁判裁決的結果是絕對的不可改判,所以這並不是什麼慣例,而是白紙黑字的規則,所以除修改規則外要改判大概是無望了。
9.02 ( a ) Any umpire’s decision which involves judgment, such as, but not limited to, whether a batted ball is fair or foul, whether a pitch is a strike or a ball, or whether a runner is safe or out, is final. No player, manager, coach or substitute shall object to any such judgment decisions. Rule 9.02 ( a ) Comment: Players leaving their position in the field or on base, or managers or coaches leaving the bench or coaches box, to argue on BALLS AND STRIKES will not be permitted. They should be warned if they start for the plate to protest the call. If they continue, they will be ejected from the game.