Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2091 2089
Boston TTC
27 Feb 2018
27 Feb 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2091 to 2089 at the Boston TTC event from 27 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.