This page explains how Larry Quinnett (USATT# 269826)'s rating went from 1413 to 1409 at the Spttc Saturday Night League event from 16 Sep 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.