This page explains how Xizi (stephanie) Sun (USATT# 92947)'s rating went from 2293 to 2319 at the 2021 Butterfly 2-Person Teams Round Robin Tournament held on 14 Aug 2021 - 15 Aug 2021. 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.