This page explains how Paulo Costa (USATT# 216909)'s rating went from 1399 to 1407 at the Spttc Saturday Night League event from 7 Oct 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.