This page explains how John C. Fredrickson (USATT# 5901)'s rating went from 1556 to 1562 at the TCTTA Friday League event from 20 Dec 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.