This page explains how Mahadevan Arivazhakan (USATT# 97451)'s rating went from 1169 to 1159 at the WCTTA Saturday League event from 15 Apr 2017. 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.