This page explains how Yangui Tao (USATT# 34560)'s rating went from 1845 to 1816 at the ICC - Advanced League event from 14 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.