This page explains how Lola Kelsey (USATT# 65637)'s rating went from 1054 to 1045 at the Northridge Open held on - 17 Feb 2008. 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.