Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2145 2125
Boston TTC
5 Dec 2017
5 Dec 2017
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2145 to 2125 at the Boston TTC event from 5 Dec 2017. 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.