This page explains how Yuyang Ying (USATT# 90630)'s rating went from 2044 to 2038 at the 2021 Fremont Butterfly July Open held on 16 Jul 2021 - 18 Jul 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.