30 May 2019 - 30 May 2019
This page explains how Thomas An (USATT# 81583)'s rating went from 1454 to 1443 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.