This page explains how David Davallou (USATT# 95288)'s rating went from 1821 to 1814 at the Alameda Ping Pong Gym Summer Tournament 2023 held on 5 Aug 2023 - 6 Aug 2023. 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.