This page explains how - - (USATT# 270267)'s rating went from 1730 to 1718 at the Spttc Saturday Night League event from 1 May 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.