This page explains how Rishi Sankar (USATT# 97483)'s rating went from 686 to 685 at the WCTTA Saturday League event from 12 Sep 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.