The loss of Michigan to Appalachian State was clearly an upset and sportswriters had a field day declaring it the greatest upset in College Football History because that is what they do to sell their pieces, but I'm not so sure they will be saying that even next year.

The fact that Appalachian State is a three-time (consecutive) champion means they have quality and Michigan never should have approached them as an easy victory, despite the division they play in.

Also, an upset indicates winning a game or series against a common opponent.  If you want to say George Mason's win over Connecticut is your upset call I can live with that, but don't label their run in the tournament as an upset.

On a final note; the inclusion of two Olympic events indicates upsets on the world stage, but your article is still ultra American in nature.  You could just have easily included American defeats among your candidates.

I don't want to belittle your research, but I think an older writer with a keen memory over the period since 1980 would make a more credible listing that covers all sports.  It also bothers me that a google search brought me to this article http://espn.go.com/page2/s/list/topupsets/010525.html where your listing is basically a copy of the ESPN Page 2 selections with the last couple of years factored in.