This page explains how Michael D Cai (USATT# 25787)'s rating went from 1658 to 1621 at the MDTTC Tuesday/Friday League event from 12 Apr 2016. 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.