This page explains how Brian Montanaro (USATT# 1167490)'s rating went from 1372 to 1408 at the Westchester 2021 November Open held on 20 Nov 2021 - 21 Nov 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.