This page explains how Weisung Tsao (USATT# 28857)'s rating went from 1934 to 1897 at the ICC - Advanced League event from 23 Jun 2018. 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.