This page explains how Elroy Rasmussen (USATT# 17035)'s rating went from 1219 to 1213 at the November Open held on - 16 Nov 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.