This page explains how Bill Lewis (USATT# 23864)'s rating went from 1390 to 1528 at the Tallgrass Prairie Open held on - 10 Aug 2002. 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.