What do all the Match Play upsets mean?

It's been a long couple of days for me, so maybe you won't find this as funny as I did. But I thought this photo tweeted by the TaylorMade rep known as "Charlie Tour" on Friday was pretty funny.

After all the upsets in the WGC-Accenture Match Play Championship over the first couple of days, he tweeted out the photo shown above, with this caption: ''A live look from Wentworth, where they just wrapped a meeting tabulating OWGR [Official World Golf Ranking] for the week of Monday, February 25.''

Seriously, though, almost every edition of the Accenture Match Play produces a ton of upsets, prompting lots of discussion about the validity and/or absurdity of the world ranking that establishes the seedings. My own take is that the upsets really don't reflect poorly on the ranking. Instead, the Accenture Match Play shows how closely bunched all the top players are.

You can argue that the two-year period that the ranking includes is too long, but then the question becomes how short of a period do you measure? One year? Six months? Three months? There's no right answer, and no perfect way to rank the players. But the cream rises to the top over the long run, and that's what, I believe, the world ranking reflects fairly accurately.