This page explains how Dave Fulcomer (USATT# 5937)'s rating went from 1627 to 1621 at the 2022 PA State Championships held on 29 Apr 2022 - 30 Apr 2022. The links below take you to pages that describe various aspects of the ratings processor.

The ratings 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.