This page explains how Allen Van (USATT# 220800)'s rating went from 1030 to 1010 at the Spttc Wednesday night league event from 4 Sep 2019. 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.