This page explains how Scott Schweitzer (USATT# 26823)'s rating went from 1621 to 1557 at the 2015 Indiana State Championships held on - 3 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.