UFC Perth Weigh-In Results: Jack Della Maddalena and Carlos Prates Official for UFC Fight Night 275 Headliner

The tension in Perth is palpable as the official weigh-ins for UFC Fight Night 275 have concluded, setting the stage for a high-stakes Saturday night at the RAC Arena. On Thursday (Friday local time), all 24 fighters stepped onto the scale at the UFC host hotel, and with the exception of a few minor adjustments, the card is locked and loaded. Headlining the event is a welterweight clash between former champion Jack Della Maddalena and the surging Carlos Prates, a fight that promises fireworks for the Australian crowd. Let’s break down the official numbers, the key storylines, and what these weigh-in results mean for the action inside the Octagon.

Main Event Weigh-In: Della Maddalena vs. Prates Official

The star of the show, Jack Della Maddalena (18-3 MMA, 8-1 UFC), hit the welterweight limit without drama, coming in at 170.5 pounds. The former champion looked lean and focused, a stark contrast to the emotional weight he carries after the tragic loss of his coach earlier this year. His opponent, Carlos Prates (23-7 MMA, 6-1 UFC), matched him exactly at 170.5 pounds. Prates, a Brazilian knockout artist, is riding a five-fight win streak and has quickly become one of the most feared strikers in the division.

Expert analysis: This is a matchup of precision versus power. Della Maddalena is a technical boxer with devastating volume, while Prates holds a significant reach advantage and fights with a sniper’s accuracy. The fact that both men made weight cleanly suggests we will see maximal speed and cardio. For Della Maddalena, fighting in front of his home country is a double-edged sword—it fuels his aggression but also invites risk against a counter-striker like Prates. I expect the first round to be a feeling-out process, with the winner likely being the one who establishes their jab first.

Co-Main Event and Key Bouts: Dariush vs. Salkilld

The co-main event features a fascinating lightweight bout between veteran contender Beneil Dariush (23-7-1 MMA, 17-7-1 UFC) and undefeated newcomer Quillan Salkilld (11-1 MMA, 4-0 UFC). Dariush weighed in at 155.5 pounds, while Salkilld, fighting in front of his home fans, came in at 156 pounds flat. This is a massive step up in competition for Salkilld, who has finished all four of his UFC opponents inside the distance.

Expert analysis: This is a classic gatekeeper test. Dariush is a former title contender with elite grappling and a granite chin, but he enters on a two-fight losing streak. Salkilld is a pressure fighter with heavy hands and a relentless pace. The key here will be whether Salkilld can survive Dariush’s takedown attempts. If Salkilld stuffs the first few shots and lands a clean overhand, he could become a star overnight. However, I favor Dariush’s experience and grappling to control the later rounds. The crowd will be electric for the local boy, but that energy can also drain a fighter who overextends early.

Full UFC Fight Night 275 Weigh-In Results

Below are the official results for every fighter on the card. All fighters made weight unless otherwise noted, ensuring a full card of action.

• Main Event (Welterweight): Jack Della Maddalena (170.5) vs. Carlos Prates (170.5)
• Co-Main Event (Lightweight): Beneil Dariush (155.5) vs. Quillan Salkilld (156)
• Middleweight: Brad Tavares (185) vs. Jun Yong Park (185.5)
• Featherweight: Ricardo Ramos (145.5) vs. Joshua Culibao (146)
• Women’s Flyweight: Casey O’Neill (125.5) vs. Luana Santos (126)
• Light Heavyweight: Marcin Prachnio (205) vs. Zac Pauga (206)
• Welterweight: Elizeu Zaleski dos Santos (170.5) vs. Nicolas Dalby (171)
• Lightweight: James Llontop (155.5) vs. John Makdessi (156)
• Featherweight: Jai Herbert (146) vs. Chris Padilla (146)
• Women’s Strawweight: Julia Polastri (115.5) vs. Stephanie Luciano (116)
• Bantamweight: Jack Jenkins (135.5) vs. Jonathan Quiroz (136)
• Light Heavyweight: Brendson Ribeiro (205) vs. Zhang Mingyang (206)

Undercard Standouts and Predictions

Beyond the main event, the undercard is stacked with potential Fight of the Night contenders. The Brad Tavares vs. Jun Yong Park middleweight bout is a classic striker-versus-grinder matchup. Tavares, a veteran, weighed in at 185 pounds, while Park hit 185.5. Park is on a three-fight win streak, but Tavares has the boxing to hurt him on the feet. Prediction: Tavares by split decision in a gritty, technical war.

In the featherweight division, Ricardo Ramos (145.5) faces Joshua Culibao (146). Ramos is a dangerous submission specialist, but Culibao has improved his striking significantly. This fight is a coin flip, but I lean toward Culibao’s durability and volume to earn a late-round TKO.

The women’s flyweight bout between Casey O’Neill (125.5) and Luana Santos (126) is a critical test for both. O’Neill, once a rising contender, has lost two straight. Santos is a Brazilian jiu-jitsu black belt. Prediction: O’Neill needs a win badly, and I expect her to use her wrestling to avoid the ground game and grind out a unanimous decision.

Finally, keep an eye on the lightweight scrap between James Llontop (155.5) and John Makdessi (156). Makdessi is a seasoned veteran, but Llontop is young and hungry. This could be a sleeper for a quick knockout.

Expert Analysis: What the Weigh-Ins Reveal

Weigh-in day often reveals more than just numbers. The demeanor of fighters on the scale can hint at their mental state. Jack Della Maddalena looked calm and businesslike, a sign that he is not letting the pressure of headlining in Perth get to him. In contrast, Carlos Prates stared down his opponent with intense focus, a clear message that he believes he belongs in the top 10. This is a dangerous fight for Della Maddalena because Prates has the power to end the fight with one shot.

Another key observation: Quillan Salkilld looked sharp and confident on the scale, which is impressive given the step-up in competition. The Australian crowd will be a sixth sense for him, but it can also lead to over-aggression. If he fights smart, he has a real path to victory against Dariush, who has looked slower in recent outings.

The light heavyweight bout between Marcin Prachnio and Zac Pauga is a classic striker-versus-wrestler matchup. Prachnio (205) is a kickboxer with knockout power, while Pauga (206) is a former football player with brute strength. This fight will likely be decided in the clinch.

Strong Conclusion: The Stage Is Set for Perth

With all fighters successfully making weight, UFC Fight Night 275 is officially a go. The RAC Arena will be rocking as the promotion returns to Perth for a card that blends local heroes with international killers. Jack Della Maddalena has the opportunity to cement his status as a title contender, while Carlos Prates aims to crash the party and announce himself as the new threat at 170 pounds.

For the fans watching on Paramount+ at 7 a.m. ET, this is a can’t-miss event. The undercard is deep, the main event is explosive, and the atmosphere will be electric. My final prediction: Della Maddalena wins a hard-fought decision in a fight that earns Fight of the Night honors, but don’t blink—Prates has the tools to steal the show. See you at the fights.

Source: Based on news from Yahoo Sports.