This page explains how Sixing Zheng (USATT# 201725)'s rating went from 1990 to 1981 at the IndyPong Monday League event from 1 Aug 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.