This page explains how Lily Yip (USATT# 53157)'s rating went from 2287 to 2284 at the 1999 North American Championsh held on - 29 Jun 1999. 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.