This page explains how Patrick Mualem (USATT# 57625)'s rating went from 2129 to 2142 at the February Westfield Open held on - 23 Feb 1997. 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.