This page explains how Yanyu Xie (USATT# 215584)'s rating went from 1818 to 2009 at the Central Carolinas Super League event from 1 Aug 2019. 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.