This page explains how Kevin Tran (USATT# 34645)'s rating went from 666 to 659 at the ICC Juniors and Adults League event from 9 Nov 2006. 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.