Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2149 2153
Boston TTC
19 Feb 2019
19 Feb 2019
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2149 to 2153 at the Boston TTC event from 19 Feb 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.