This page explains how Xianghua Xiao (USATT# 927831)'s rating went from 1200 to 1177 at the Austin Table Tennis League event from 7 Dec 2016. 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.