This page explains how Mark E. Berg (USATT# 6250)'s rating went from 1547 to 1543 at the LYTTC Barry Dattel Memorial 2023 held on 14 Jan 2023 - 15 Jan 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.