Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2109 2113
Boston TTC
17 Nov 2015
17 Nov 2015
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2109 to 2113 at the Boston TTC event from 17 Nov 2015. 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.