Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2137 2124
Boston TTC
10 Jan 2017
10 Jan 2017
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2137 to 2124 at the Boston TTC event from 10 Jan 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.