This page explains how Oscar Ospina (USATT# 3366)'s rating went from 1577 to 1574 at the 305TTC - Table Tennis Club - League event from 13 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.