I completed my Soccer Pythagorean document a couple of days ago, but for some reason I had the hardest time developing a PDF file (I used LyX). I figured it out tonight and I'm linking it to the site now. I greatly appreciate your comments.
MORE (23 October, 10:50pm): I'm compiling some score data from the 2008-09 English Premier League season to test this Pythagorean, and determine an estimate of the exponent. I'm starting with Arsenal, Aston Villa, Blackburn, Bolton, and Chelsea; perhaps some other people would like to work with five other teams.