This page explains how Billy Carlisle (USATT# 46875)'s rating went from 1609 to 1596 at the Northshore TTC 2023 Fall Open held on 23 Sep 2023 - 24 Sep 2023. 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.