This page explains how Danny Qun Zhang (USATT# 220501)'s rating went from 1880 to 1865 at the LYTTC Friday Pro League event from 1 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.