This page explains how Valentin Izraelev (USATT# 28706)'s rating went from 780 to 770 at the All Tree Service Open held on - 4 Dec 2005. 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.