This page explains how John Traino (USATT# 17434)'s rating went from 1195 to 1170 at the Grace Lin TTC Open held on - 28 Oct 2012. 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.