This page explains how Stephen Finn (USATT# 270149)'s rating went from 1270 to 1229 at the Westchester January 2022 Open held on 29 Jan 2022 - 30 Jan 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.