This page explains how Walter Witkowski (USATT# 21983)'s rating went from 1012 to 962 at the California State Championship held on 6 May 2016 - 8 May 2016. 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.