This page explains how Xizi (stephanie) Sun (USATT# 92947)'s rating went from 2169 to 2145 at the Triangle Upside Down Open Tournament held on - 17 May 2015. 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.