Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2103 2091
Boston TTC
20 Feb 2018
20 Feb 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2103 to 2091 at the Boston TTC event from 20 Feb 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.