This page explains how Sajan Alapat (USATT# 85970)'s rating went from 1928 to 1918 at the LYTTC Friday Pro League event from 17 Dec 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.