Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2234 2132
Spttc Saturday Night League
17 Jul 2021
17 Jul 2021
This page explains how Changping Duan (USATT# 49379)'s rating went from 2234 to 2132 at the Spttc Saturday Night League event from 17 Jul 2021. 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.