Registration is nearly closed, the preseeds are set, and the start of the 2018 U.S. Open senior men's freestyle tournament is mere days away. Though a few more surprises may arrive at the last minute in Las Vegas, which weight is going to be the most impressive? We dug into the latest lists and ranked the divisions by overall strength.

You can check out a list of everyone who is registered in all weights and styles here on FloArena. 

Watch the 2018 U.S. Open LIVE on April 25-28

1) 61kg

How's this for a collection of worthies: A.J. Schopp, Alan Waters, Brandon Wright, Chris Dardanes, Cody Brewer, Cory Clark, Darrius Little, Earl Hall, Joe Colon, Johnni DiJulius, Jon Morrison, Nahshon Garrett, Nico Megaludis, Seth Gross, and Tyler Graff?

The 61kg weight class may also be the most wide-open division, at least according to one sportsbook. Morrison, Colon, and Gross have already qualified for the world team trials challenge tournament, but they're headed to Vegas anyway to earn that spot in Final X. With only seven maximum team trials qualifying bids available (fewer if Morrison, Colon, or Gross place in the top seven), this weight class will be a bloodbath.

Watch Graff and Morrison battle at the 2018 Bill Farrell in NYC:

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2) 70kg 

The 70kg weight class is right on the heels of 61kg as far as depth goes, headlined by Olympian Frank Molinaro. College freshman sensation Hayden Hidlay and junior world silver medalist Ryan Deakin will be looking to make their marks on the senior circuit for the first time. The only thing holding 70kg back from the top spot is the absences of the wrestlers already qualified for the world team trials, namely Jason Nolf, Kellen Russell, and Kyle Ruschell. 

Watch contenders Mario Mason and Hunter Stieber lock horns at the Dave Schultz Memorial Open:

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3) 79kg

This weight had the potential to be the most loaded bracket, but the lack of entries by NCAA rivals Mark Hall and Zahid Valencia and a convalescing Jon Reader knocks it down a peg or two. Still, Kyle Dake and Alex Dieringer alone make this one of the marquee weight classes, not to mention multiple-time All-Americans Mike Evans, Josh Asper, and Nate Jackson, who will also be in Vegas vying for a bid to Final X.

Watch Kyle Dake and Alex Dieringer's last match, in the finals of the 2017 World Team Trials Challenge Tournament at 74kg:

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4) 57kg

NCAA champ Spencer Lee won't be at the Open—though he has qualified for the team trials—which hurts 57's case for being toughest weight. However, when you can still boast a junior world champ in Daton Fix and two-time world team member Tony Ramos as entries, you still have a monster bracket. 

5) 65kg

There's more to this weight than world champ Logan Stieber. Joey McKenna and Evan Henderson will be his toughest competition but don't sleep on studs like Anthony Ashnault, Jaydin Eierman, Dean Heil, and many more.

6) 125kg

Heavyweight got a big boost with the surprise registration of Olympic gold medalist Jake Varner. It's shaping up to be one of the deepest 125kg Opens in years, even with returning world bronze medal winner Nick Gwiazdowski sitting until Final X. Dom Bradley, Zach Rey, Adam Coon, Tony Nelson, and teenage sensation Gable Steveson will all be mixing it up this weekend.  

Watch #1 preseed Dom Bradley win the 2017 Dave Schultz:

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7) 86kg

One could argue that David Taylor alone makes this weight one of the best in Vegas. The depth is lacking when compared to some of the other weights, but Richard Perry, Pat Downey, and TJ Dudley can all be expected to provide fireworks at 86kg.

8) 92kg

Because J’den Cox won his 2017 world bronze medal at 86kg and is now competing at 92kg, he does not have the luxury of a Final X bid, at least not yet anyway. His entry into the Open brings a lot of star power to an otherwise relatively skimpy weight class. He toughest competition looks to be Hayden Zillmer, Enock Francois, and Kenny Courts.

9) 74kg

Adding 79kg cleared some of the competition out of 74kg. That plus the prospect of trying to knock off Jordan Burroughs, the guy who has been holding the weight down in the USA since 2013, will have that effect. Still, Nazar Kulchytskyy has been staking a convincing claim lately that he's the next best American at this weight, though folks like Isaiah Martinez and Evan Wick and others may have something to say about it next weekend. 

10) 97kg

The addition of 92kg definitely cleared out some of the competitors at 97kg. And, like at 74, there is a multiple-time world champ at the weight, this time by the name of Kyle Snyder who is currently sitting in FInal X by dint of his victory over Abdualrashid Sadulaev at the 2017 World Championships in Paris. But given all that, being #10 on this list does not mean the bracket will be truly depleted. And I certainly wouldn't want to tell Kyven Gadson or Ty Walz or Blaize Cabell that, especially not to their faces.