Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2088 2069
Boston TTC
22 Jul 2014
22 Jul 2014
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2088 to 2069 at the Boston TTC event from 22 Jul 2014. 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.