This page explains how Zach Costopoulos (USATT# 272053)'s rating went from n/a to 1233 at the Paddle Palace Atlanta Winter GRR held on 6 Nov 2021 - 7 Nov 2021. 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.