This page explains how Danny Wan (USATT# 219179)'s rating went from 1516 to 1456 at the MDTTC Tuesday/Friday League event from 29 May 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.