This page explains how ANDREW DAVIS (USATT# 32895)'s rating went from 1863 to 1833 at the 2011 Decatur Open held on - 20 Aug 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.