This page explains how Bernardo Iturriaga (USATT# 1236)'s rating went from 2155 to 2154 at the Spttc Saturday Night League event from 13 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.