This page explains how Mark Krotec (USATT# 80710)'s rating went from 1792 to 1780 at the Pittsburgh Steel City Open held on - 2 May 2015. 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.