Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2086 2081
Boston TTC
28 May 2019
28 May 2019
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2086 to 2081 at the Boston TTC event from 28 May 2019. 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.