This page explains how Angie Tan (USATT# 87830)'s rating went from 2172 to 2155 at the Swan Friday O2000 Team League event from 26 May 2017. The links below take you to pages that describe various aspects of the rating processor.

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.