This page explains how Frank A. Roth (USATT# 9592)'s rating went from 1665 to 1625 at the 2013 Pennsylvania State Championships held on - 21 Apr 2013. 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.