Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2174 2145
Boston TTC
16 Jul 2019
16 Jul 2019
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2174 to 2145 at the Boston TTC event from 16 Jul 2019. 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.