This page explains how Patrick Keville (USATT# 77971)'s rating went from 1837 to 1823 at the Matchpoint TTC Friday League event from 14 Jun 2019. 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.