This page explains how Zhilong Lin (USATT# 26597)'s rating went from 2014 to 1989 at the LYTTC Friday Pro League event from 28 Jan 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.