◆Official Rules: 9.00 The Umpire 9.02(c) If a decision is appealed, the umpire making the decision may ask another umpire for information before making a final decision. No umpire shall criticize, seek to reverse or interfere with another umpire's decision unless asked to do so by the umpire making it.
◆Official Rules: 9.00 The Umpire 9.04(c) If different decisions should be made on one play by different umpires, the umpire in chief shall call all the umpires into consultation, with no manager or player present. After consultation, the umpire in chief (unless another umpire may have been designated by the league president) shall determine which decision shall prevail, based on which umpire was in best position and which decision was most likely correct. Play shall proceed as if only the final decision had been made.