This page explains how Gregg Robertshaw (USATT# 9501)'s rating went from 2126 to 2138 at the Butterfly Cary Cup held on - 16 Mar 2014. 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.