30 May 2019 - 30 May 2019
This page explains how Eon S S Chang (USATT# 93642)'s rating went from 1949 to 1960 at the 2019 Meiklejohn North American Seniors Open held on 30 May 2019 - 30 May 2019. The links below take you to pages that describe various aspects of the ratings processor.
The ratings 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.