This page explains how Dean Pedrotti (USATT# 267117)'s rating went from 1018 to 1010 at the TT&M Friday Night Butterfly League event from 10 Jun 2022. 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.