This page explains how Utako Kase (USATT# 223100)'s rating went from 1611 to 1587 at the Spttc Saturday Night League event from 21 Aug 2021. 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.