This page explains how Xujing Zhang (USATT# 199299)'s rating went from 517 to 483 at the Fremont Table Tennis Academy League event from 8 Oct 2017. 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.