This page explains how Thein Win (USATT# 30566)'s rating went from 1688 to 1636 at the Butterfly Spring Open held on - 10 Apr 2004. 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.