Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2039 2030
Boston TTC
5 May 2015
5 May 2015
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2039 to 2030 at the Boston TTC event from 5 May 2015. 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.