This page explains how Brian McElvain (USATT# 82772)'s rating went from 822 to 1207 at the ICC STIGA California Open held on - 3 May 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.