This page explains how Kouen Wakabayashi (USATT# 271264)'s rating went from 674 to 639 at the Spttc Saturday Junior League event from 30 Mar 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.