This page explains how Herbert Kline Wilson (USATT# 11156)'s rating went from 1637 to 1621 at the NTTC February Open held on - 18 Feb 1995. 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.