This page explains how Peter Neal (USATT# 1180580)'s rating went from 872 to 859 at the RITTA 2023 BUTTERFLY OPEN held on 12 Nov 2023 - 12 Nov 2023. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.