This page explains how Scott Schweitzer (USATT# 26823)'s rating went from 1665 to 1620 at the 2012 Indiana Open held on - 12 Aug 2012. 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.