Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2040 2042
1999 US Open
- 4 Jul 1999
- 4 Jul 1999
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2040 to 2042 at the 1999 US Open held on - 4 Jul 1999. 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.