This page explains how Weizhe Zhang (USATT# 214782)'s rating went from 26 to 18 at the Fremont Table Tennis Academy League event from 21 Jan 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.