Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2117 2099
Boston TTC
23 Oct 2018
23 Oct 2018
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2117 to 2099 at the Boston TTC event from 23 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.