Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2123 2103
Boston TTC
13 Feb 2018
13 Feb 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2123 to 2103 at the Boston TTC event from 13 Feb 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.