This page explains how Qiang Zhao (USATT# 25755)'s rating went from 1500 to 1480 at the Austin Table Tennis League event from 21 Jul 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.