This page explains how Aron Zhang (USATT# 97413)'s rating went from 1992 to 1979 at the Butterfly MDTTC August Open held on 18 Aug 2018 - 19 Aug 2018. 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.