This page explains how Stanley Stankiewicz (USATT# 46966)'s rating went from 1615 to 1612 at the Summer Open held on - 30 Jul 2011. 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.