This page explains how Qiwen Zhao (USATT# 154754)'s rating went from 1161 to 1127 at the Google Mountain View Table Tennis League event from 31 Jan 2014. 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.