It's been more than one month since we last rolled out the latest UFC fighter rankings ... apologies for the delay.

I'm not going to make excuses, but let me say this: things have been extremely hectic the last month or so, making it a monster challenge to keep this site humming along.

Anywho, new additions and the upsets continue to affect the UFC landscape. Since the last time we did this back in April, another champion has been dethroned (Chuck Liddell) and more insane talent has been added to the UFC fighter stable.

PRIDE FC dual champion Dan Henderson, in fact, will challenge new 205-pound king Quinton "Rampage" Jackson later this year for Jackson's UFC belt inside the Octagon.

Furthermore, Mike Goldberg announced at UFC 71 that Mauricio "Shogun" Rua — perhaps the best fighter in the weight class in the world — will also fight in the UFC light heavyweight division.

Now, the announcement of Henderson is still a bit murky. But I've got it on good authority that he is indeed a UFC fighter and will compete in both organizations -- it's not just a one-shot deal.

Kudos to "Hollywood" Henderson ... who is on the wrong side of 35. That dude must love to fight.

Before we get to the rankings I want to again thank our loyal panel of overt and covert contributors, including Steve Seivert at the Houston Chronicle, Dave Doyle at FOXSports.com, Pramit Mohapatra at the Baltimore Sun (and MMAMadness.com), Miguel Lopez at the Long Beach Press-Telegram, and Luke Thomas from BloodyElbow.com.

Naturally, the UFCmania.com team also pitched in.

Enjoy ... and remember to let us know what you think.

To see the latest UFCmania.com rankings for May 2007 click here.