Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2172 2156
1997 Millcreek Open
- 19 Oct 1997
- 19 Oct 1997
This page explains how Changping Duan (USATT# 49379)'s rating went from 2172 to 2156 at the 1997 Millcreek Open held on - 19 Oct 1997. 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.