Donald B. Hayes
USATT#: 50664
| Coach Level: Club | Certified Umpire
2052 2070
Boston TTC
20 Oct 2015
20 Oct 2015
This page explains how Donald B. Hayes (USATT# 50664)'s rating went from 2052 to 2070 at the Boston TTC event from 20 Oct 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.