This page explains how Jack (Hong) Zhang (USATT# 278798)'s rating went from 1033 to 1015 at the LYTTC Friday Pro League event from 16 Jun 2023. 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.