| Certified Umpire
17 Jul 2021 - 17 Jul 2021
This page explains how Martin P. P. Del Vecchio (USATT# 18168)'s rating went from 2159 to 2106 at the SpinBlock July Open - Giant Round Robin held on 17 Jul 2021 - 17 Jul 2021. 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.