This page explains how Om Narvekar (USATT# 217143)'s rating went from 1509 to 1503 at the WCTTA Saturday League event from 22 Feb 2020. 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.