28 Feb 2020
This page explains how Danny Wan (USATT# 219179)'s rating went from 1988 to 1974 at the MDTTC Tuesday/Friday League event from 28 Feb 2020. The links below take you to pages that describe various aspects of the ratings processor.
The ratings 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.