This page explains how Jingfan Feng (USATT# 219191)'s rating went from 1863 to 1851 at the TTA Adv League - SUNDAY event from 29 Jan 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.