Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2149 2157
Boston TTC
18 Jun 2019
18 Jun 2019
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2149 to 2157 at the Boston TTC event from 18 Jun 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.