Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2079 2056
Boston TTC
4 Apr 2017
4 Apr 2017
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2079 to 2056 at the Boston TTC event from 4 Apr 2017. 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.