This page explains how Arkadi Popov (USATT# 219562)'s rating went from 1261 to 1256 at the PTTC Saturday League event from 26 Nov 2022. 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.