Thelma Tybie Sommer
USATT#: 10155
1305 1295
Grand Canyon State Games
- 20 Jun 1999
- 20 Jun 1999
This page explains how Thelma Tybie Sommer (USATT# 10155)'s rating went from 1305 to 1295 at the Grand Canyon State Games held on - 20 Jun 1999. 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.