John P. Pratt
USATT#: 9196
1530 1526
U.S. National Championships
- 16 Dec 2006
- 16 Dec 2006
This page explains how John P. Pratt (USATT# 9196)'s rating went from 1530 to 1526 at the U.S. National Championships held on - 16 Dec 2006. 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.