This page explains how Mark E. Berg (USATT# 6250)'s rating went from 1866 to 1864 at the NYTTF June Open held on - 15 Jun 2008. 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.