This page explains how Bishop Duperret (USATT# 222901)'s rating went from 1220 to 1253 at the Tucson Table Tennis Club League event from 4 Aug 2019. 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.