Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2099 2108
Boston TTC
30 Oct 2018
30 Oct 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2099 to 2108 at the Boston TTC event from 30 Oct 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.