By Jake Donovan, photos by Tom Hogan/Hoganphotos

Luis Ortiz is set for his fourth fight in a span of just nine months as he takes on veteran heavyweight Tony Thompson. Their non-title fight takes place Saturday evening at the D.C. Armory in Washington D.C., airing live on HBO.  

As pointless as it is for a weigh-in to take place in a division with an unlimited weight limit, Friday's scene was a bit telling for both boxers. Ortiz tipped the scales at a career-heaviest 242.6 lbs., while Thompson - decked out in a T-shirt, sweatpants, ball cap and sneakers - checked in at 263.8 lbs. 

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Ortiz (24-0, 21KOs) is the reigning World Boxing Association (WBA) heavyweight titltist, but the sanctioning body refused to recognize Thompson as an acceptable challenger, coming in off of a loss and having dropped three of his last five starts.

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As such, the fight moves forward as a non-title affair, providing Ortiz the opportunity to remain active. 

Getting the unbeaten Cuban southpaw to that point proved challenging, as a number of heavyweights turned down the opportunity for a variety of reasons. 

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His team - including Golden Boy Promotions and manager Jay Jimenez - and HBO ultimately settled on Thompson, a middle-aged southpaw who was willing to take the fight given it was a rare shot at a home game. 

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Their careers are at polar opposite points: Ortiz is coming off of a sensational 7th round knockout of perennial Top 10 contender Bryant Jennings in his HBO debut last December, while Thompson was lethargic in a points loss to Malik Scott last October in Orlando, Florida. 

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The co-feature attraction has been met with far greater embrace, as Sadam Ali and Jessie Vargas collide with the vacant World Boxing Organization (WBO) welterweight title at stake. 

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In stark contrast to their heavyweight counterparts, the pair of welterweights hit the scales in supremely sculpted condition. Ali (22-0, 13KOs) weighed in right at the 147 lb. divisional limit, while Vargas (26-1, 9KOs) clocked in at 146.2 lbs. 

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Also on the card, Robinson Castellanos and Oscar Escandon will collide in a WBC featherweight final eliminator for a shot at champion Gary Russell Jr. Castellanos weighed in at 124.6-pounds, while Escandon was 126. 

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ali-vargas (1)Jake Donovan is the managing editor of BoxingScene.com. Twitter: @JakeNDaBox