Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2193 2166
2021 U.S. Open Table Tennis Championships
17 Dec 2021 - 22 Dec 2021
17 Dec 2021 - 22 Dec 2021
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2193 to 2166 at the 2021 U.S. Open Table Tennis Championships held on 17 Dec 2021 - 22 Dec 2021. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
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.