This page explains how Cory Eider (USATT# 62727)'s rating went from 2481 to 2512 at the Butterfly Teams Championships held on - 1 Sep 2013. 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.