This page explains how Irving Adams (USATT# 30606)'s rating went from 1815 to 1800 at the Matchpoint TTC Friday League event from 29 Mar 2024. 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.