Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
1911 1909
Westfield November Open
- 20 Nov 1994
- 20 Nov 1994
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 1911 to 1909 at the Westfield November Open held on - 20 Nov 1994. 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.