This page explains how Patrick Kin Luen Lui (USATT# 7924)'s rating went from 1926 to 1854 at the Myrtle Beach Open League event from 20 Feb 2020. 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.