This page explains how Nick J. Mintsiveris (USATT# 24801)'s rating went from 2253 to 2240 at the San Diego 40th Anniversary Ope held on - 3 Oct 1999. 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.