This page explains how Jingfan Feng (USATT# 219191)'s rating went from 1979 to 1973 at the Swan Sunday League event from 24 Jun 2024. 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.