This page explains how Clem Volpert (USATT# 38067)'s rating went from 1348 to 1298 at the AITTA event from 16 Jan 2011. 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.