This page explains how Louis Vance (USATT# 95630)'s rating went from 1478 to 1463 at the AZ PTTC Monday event from 21 Oct 2019. 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.