This page explains how Alan Lin (USATT# 61647)'s rating went from 1819 to 1755 at the LYTTC Friday Pro League event from 6 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.