This page explains how Onur Celen (USATT# 268442)'s rating went from 1980 to 1974 at the LYTTC Friday Pro League event from 15 Jul 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.