This page explains how JIM TARKOWSKI (USATT# 10476)'s rating went from 1938 to 1972 at the AZ PTTC Monday event from 6 Jan 2020. 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.