This page explains how Mark Malench (USATT# 64047)'s rating went from 1673 to 1670 at the SJISC Weekly League nights event from 6 Sep 2022. 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.