This page explains how Pierre Dorcely (USATT# 47764)'s rating went from 1667 to 1648 at the April Westfield Open held on - 5 Apr 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.