This page explains how Jane Lawnhurst (USATT# 34086)'s rating went from 877 to 859 at the Top Spin Winter Open held on - 8 Jan 2011. 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.