This page explains how Marcin Motyka (USATT# 1173787)'s rating went from 1880 to 1855 at the LYTTC Friday Pro League event from 28 Oct 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.