This page explains how John S. Hernandez (USATT# 54808)'s rating went from 1662 to 1625 at the Fosroc Inc. 1994 Kentucky Open held on - 21 May 1994. 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.