Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2127 2111
Boston TTC
6 Jun 2017
6 Jun 2017
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2127 to 2111 at the Boston TTC event from 6 Jun 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.