Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
1964 1958
NJTTC OPEN
- 22 Apr 2001
- 22 Apr 2001
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 1964 to 1958 at the NJTTC OPEN held on - 22 Apr 2001. 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.