This page explains how Helen Ni (USATT# 35001)'s rating went from 1540 to 1530 at the SportsFest XIV 'Team' & Top Gun Singles Open held on - 18 Jul 2010. 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.