This page explains how Chen Xu (USATT# 275290)'s rating went from 1121 to 1219 at the Spttc Saturday Junior League event from 17 Jun 2023. 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.