This page explains how Travis Qiu (USATT# 278213)'s rating went from 583 to 581 at the Spttc Saturday Junior League event from 14 Oct 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.