This page explains how David Webb (USATT# 81946)'s rating went from 1199 to 1183 at the SVTTC Sunday U2000 event from 7 Jun 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.