This page explains how Romi Kovacs (USATT# 270122)'s rating went from 1278 to 1263 at the SpinBlock Monday Night League event from 10 May 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.