This page explains how Roger Tilton (USATT# 62555)'s rating went from 1270 to 1269 at the Zaman TTC Open held on - 3 Aug 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.