This page explains how Robert Sun (USATT# 92671)'s rating went from 1388 to 1360 at the LYTTC Friday Pro League event from 6 May 2015. 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.