Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2173 2151
Boston TTC
11 Dec 2018
11 Dec 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2173 to 2151 at the Boston TTC event from 11 Dec 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.