This page explains how Gary Erwin Kerkow (USATT# 7236)'s rating went from 1963 to 1961 at the MN Spring Open held on - 23 Apr 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.