This page explains how Hsiang-Yu Hsieh (USATT# 928356)'s rating went from 1010 to 1009 at the Swan Sunday League event from 28 Aug 2022. 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.