This page explains how Lizhao Zhang (USATT# 88828)'s rating went from 1581 to 1571 at the 2016 Edgeball Chicago International Table Tennis Open held on 29 Oct 2016 - 30 Oct 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.