UFC Signs Former KSW Double Champion Roberto Soldic in Major Free Agency Move

The Ultimate Fighting Championship has finally secured the signature of one of the most dangerous free agents in mixed martial arts. Roberto Soldic, the 31-year-old Croatian knockout artist and former two-division KSW champion, is officially on the UFC roster. The move, confirmed over the weekend as Soldic's profile materialized on the promotion's active welterweight page, ends years of speculation. It injects a proven, explosive finisher into a 170-pound division that is constantly hungry for fresh contenders. For a promotion that has spent the last month heavily focused on developmental signings, acquiring an established international star of Soldic's caliber represents a major shift in immediate stakes.[1][3]

Soldic arrives in the octagon with a formidable 21-4 professional record, boasting a staggering finish rate that includes 18 victories by way of knockout. He built his fearsome reputation on the European circuit, primarily under the banner of Poland's KSW, where he captured and defended both the welterweight and middleweight straps. His striking is characterized by a calm, calculating southpaw approach that suddenly erupts with devastating left-hand power. He is not a prospect looking to build a name; he is a finished product who has already headlined massive arena shows across Europe, drawing crowds of over 50,000 fans during his peak run in Poland.[2][4][5]

"The Croatian knockout artist is now listed on the UFC roster but does not have a date set for his promotional debut," noted MMA Sucka, highlighting the immediate anticipation surrounding his first assignment. While the UFC has not formally announced his first opponent, the mere presence of his name in the active welterweight database has already sparked widespread speculation among fans and analysts. The 170-pound weight class is notoriously difficult to climb, but Soldic's pedigree suggests he will not be fed to the bottom of the unranked tier. He is expected to draw a high-profile name right out of the gate.[2][7]

What makes Soldic's arrival particularly compelling for the UFC brass is his history with the current middleweight king. In 2018, at KSW 45, Soldic delivered a devastating knockout to Dricus du Plessis, avenging a prior loss and reclaiming his welterweight title. Du Plessis has since transitioned to the UFC and captured the 185-pound championship, making Soldic one of the very few men on the planet who can claim a definitive, violent victory over a reigning UFC titleholder. That footage is a promoter's dream, offering undeniable proof that Soldic's power translates to the absolute highest levels of the sport.[4][5]

That history provides matchmakers with a ready-made blockbuster narrative should Soldic ever decide to move up to 185 pounds, or should the promotion want to leverage that footage to build his welterweight debut. As Yardbarker points out, "whether he's hunting for a trilogy fight with 'Stillknocks' or tearing through the rankings with violent knockouts, his UFC run is going to be filled with excitement." The promotional material practically writes itself, giving Soldic a level of built-in marketability that most debutants take years to cultivate. He arrives with a built-in storyline that immediately resonates with the UFC's global audience.[5]

The road to the sport's premier stage, however, took a frustrating detour. In 2022, Soldic opted to sign with ONE Championship rather than the UFC, a move that many expected would cement his status as a global superstar in Asia. Instead, that stint proved underwhelming due to severe inactivity and promotional hurdles. He fought just three times for the Asian promotion, with his last appearance coming in February 2025, before his contract finally expired in early August 2026. That prolonged absence from high-level competition is the only major question mark hanging over his highly anticipated arrival in the octagon.[2][4]

Now free from that restrictive deal, Soldic enters a shark tank at 170 pounds. The division is currently ruled by Belal Muhammad and packed with undefeated killers like Shavkat Rakhmonov, Ian Machado Garry, and Jack Della Maddalena. MiddleEasy reports that Soldic gives matchmakers "a ready-made action option, especially around power punchers and European names already active on the roster." He provides a fresh, dangerous puzzle for a division that frequently sees its top contenders locked in grappling-heavy stalemates, offering a stylistic contrast that guarantees fan-friendly matchups.[1]

The timing of the signing stands in stark contrast to the UFC's recent roster-building strategy. Over the first four weeks of the 2026 season of Dana White's Contender Series, the promotion handed out 20 contracts to regional prospects. Soldic's acquisition is entirely different—a rare dip into the high-end free-agent market. The immediate question is how the UFC will deploy their new asset: easing him in against a fringe top-15 opponent to shake off any lingering cage rust, or fast-tracking him into a high-stakes main card slot before the end of 2026. The next move belongs to the UFC matchmakers, who must decide exactly how deep into the welterweight waters they want to throw their new Croatian star.[6]