This page explains how Vidyadhara Gubbi (USATT# 74807)'s rating went from 1644 to 1640 at the ICC California State Open held on - 18 Mar 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.