This page explains how Terry Timmins (USATT# 42815)'s rating went from 1347 to 1344 at the 1998 Arizona Open held on - 22 Feb 1998. 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.