Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2153 2111
Boston TTC
11 Feb 2020
11 Feb 2020
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2153 to 2111 at the Boston TTC event from 11 Feb 2020. 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.