This page explains how Patrick Keville (USATT# 77971)'s rating went from 1693 to 1680 at the LYTTC Giant RR - November Open held on 14 Nov 2020 - 15 Nov 2020. 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.