This page explains how Oto-Obong Akpan (USATT# 272293)'s rating went from 1320 to 1244 at the Westchester June 2023 Open held on 24 Jun 2023 - 25 Jun 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.