John Olsen
USATT#: 8825
| Coach Level: State
1801 1791
Potomac 2009 Spring Open
- 10 May 2009
- 10 May 2009
This page explains how John Olsen (USATT# 8825)'s rating went from 1801 to 1791 at the Potomac 2009 Spring Open held on - 10 May 2009. 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.