This page explains how David Eric England (USATT# 54905)'s rating went from 1623 to 1555 at the Charlotte 1600 Loopalalooza held on - 1 Mar 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.