This page explains how Paul C.T. Liu (USATT# 1628)'s rating went from 1284 to 1283 at the St. Louis Open held on - 4 May 2014. 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.