Blantant theft? No. Both of these articles owe their methodology and conclusions to a book published in the 80's by Bob Carroll and Pete Palmer called The Hidden Game of Football, of which a new edition has recently been published.
Then again anyone who knows about the concept of expected value and cares anything about sports is at some point likely to try to relate the two. So, while your zeal to stamp out plagiarism is admirable, you should seriously consider kil...err settling down.
A link to the new edition of that book on A'zon:
http://www.amazon.com/exec/obidos/tg...s&n=507846