This page explains how Bob Janes (USATT# 26317)'s rating went from 1563 to 1505 at the Frost Spin TT League event from 9 Jan 2004. 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.