This page explains how Patrick Kin Luen Lui (USATT# 7924)'s rating went from 1840 to 1869 at the Maryland Circuit held on - 3 Aug 2013. 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.