This page explains how Jingfan Feng (USATT# 219191)'s rating went from 1884 to 1970 at the Swan Sunday League event from 23 Sep 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.