This page explains how Zikai Yao (USATT# 278854)'s rating went from 71 to 37 at the HITTA Weekly League event from 18 Aug 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.