This page explains how Dongyong Zhou (USATT# 87743)'s rating went from 1868 to 1845 at the TTA Adv League - SUNDAY event from 7 May 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.