This page explains how Grigoriy Yasinov (USATT# 30117)'s rating went from 1545 to 1541 at the Maryland Circuit held on - 7 Dec 2003. 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.