Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2089 2088
Boston TTC
8 Jul 2014
8 Jul 2014
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2089 to 2088 at the Boston TTC event from 8 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.