This page explains how Ken Boersma (USATT# 1439)'s rating went from 1003 to 993 at the NTTC April Open held on - 14 Apr 1996. 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.