This page explains how Derek Y Wang (USATT# 1172858)'s rating went from 1875 to 1864 at the LYTTC Friday Pro League event from 19 Jan 2024. 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.