This page explains how Ying Xiao (USATT# 271610)'s rating went from 205 to 240 at the HITTA Weekly League event from 5 Nov 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.