This page explains how Rodney Linn Peffer (USATT# 9004)'s rating went from 1793 to 1780 at the Sun TV Open held on - 17 Aug 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.