This page explains how John F. Mcfadden (USATT# 29798)'s rating went from 1431 to 1331 at the Westchester 2014 May Open held on - 25 May 2014. 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.