This page explains how Ricardo Abril (USATT# 22633)'s rating went from 1980 to 1981 at the Salvation Army/Stiga Spring Op held on - 26 Mar 2006. 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.