Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
1810 1800
1994 Kelly's Sporting Goods Op
- 17 Apr 1994
- 17 Apr 1994
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 1810 to 1800 at the 1994 Kelly's Sporting Goods Op held on - 17 Apr 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.