This page explains how Walt Rosen (USATT# 9570)'s rating went from 1832 to 1859 at the HTTC February RR held on - 22 Feb 1997. 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.