Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2127 2122
Boston TTC
24 Jul 2018
24 Jul 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2127 to 2122 at the Boston TTC event from 24 Jul 2018. 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.