Jan Blachowicz gets unbeaten Navajo Stirling at UFC Belgrade

Jan Blachowicz did not lose his place at UFC Belgrade when Bogdan Guskov was moved to another card. He received a more awkward assignment instead. The UFC announced on July 17 that the former light heavyweight champion will face undefeated New Zealand prospect Navajo Stirling in the co-main event on August 1, keeping a major name on the promotion’s first event in Serbia while completely changing the sporting argument around the bout.

Blachowicz was preparing for unfinished business. His original opponent, Guskov, fought him to a majority draw at UFC 323 in December 2025, and the Belgrade booking was supposed to settle that result. The plan changed after Khalil Rountree withdrew from his July 25 main event against Magomed Ankalaev in Abu Dhabi. Guskov was reassigned to face Ankalaev, leaving Blachowicz without an opponent until the UFC called on Stirling.

This is not a like-for-like replacement. Guskov offered familiarity, recent evidence and a clear reason for a rematch. Stirling brings youth, momentum and far less information. He is 28, holds a 10-0 professional record and has won all five of his UFC appearances. Blachowicz is 43, has been competing professionally since 2007 and has shared the cage with champions from several generations. The 15-year age difference makes the new co-main event feel less like a repaired booking and more like an examination of where both men now belong.

The UFC confirmed the matchup through its official X accounts, tagging both fighters and retaining the bout’s co-main-event position. The public announcement arrived only 15 days before fight night. The announcement itself does not establish how long Stirling knew about the opportunity, so it would be careless to describe the precise length of his preparation.

Why Navajo Stirling is a dangerous late replacement

Stirling’s rise has accelerated over the past seven months. He entered the UFC in December 2024 and began with three consecutive decisions over Tuco Tokkos, Ivan Erslan and Rodolfo Bellato. Those performances showed patience but did not immediately force him into the light heavyweight conversation. The next two did. Second-round stoppages of Bruno Lopes in March and Ion Cutelaba in June gave him the violence and timing that contender runs usually need.

The Cutelaba win is especially relevant because it was completed six weeks before the Belgrade event. Stirling did not need to rebuild his confidence or explain a cautious decision. He broke down an experienced UFC opponent and finished him with strikes at 3:23 of the second round. Moving from Cutelaba to a former champion is still an enormous jump, but the booking is attached to genuine form rather than an unbeaten record assembled outside the promotion.

His UFC statistics underline the pace of his striking. The promotion lists Stirling at 6.24 significant strikes landed and 2.62 absorbed per minute. Blachowicz averages 3.55 landed and 3.14 absorbed. Those figures do not predict the result on their own: Stirling’s sample covers five UFC fights, while Blachowicz’s numbers were collected across more than a decade in the Octagon and against far deeper competition. They do show why the younger fighter cannot be treated as a convenient replacement.

Blachowicz still presents problems Stirling has not faced at this level. The Pole is a Brazilian jiu-jitsu black belt with nine professional submission victories, a 78-inch reach and enough tactical experience to change the shape of a fight when a pure kickboxing contest is not working. His 2021 title defense against Israel Adesanya remains the clearest example. Blachowicz used size, timing and late takedowns to beat a more celebrated striker over five rounds.

The difficult part is his recent record. Blachowicz has not recorded a victory since Aleksandar Rakic suffered a knee injury in their May 2022 bout. Since then, he has drawn with Ankalaev, lost decisions to Alex Pereira and Carlos Ulberg, and drawn with Guskov. That sequence is not the same as four decisive defeats, but it has denied him the clean result needed to remain in the championship conversation.

What UFC Belgrade can change for both fighters

The stakes are different on each side. Stirling is being offered the fastest route of his UFC career: beat a former champion and his prospect label becomes too small. Blachowicz is being asked to defend his position against an opponent who owns less name recognition but carries more immediate momentum. A victory would end the veteran’s winless run. A defeat would make it difficult to argue that he still belongs ahead of the division’s new wave.

The chain of changes leading to the matchup is straightforward:

• Khalil Rountree withdraws from the July 25 UFC Abu Dhabi main event against Magomed Ankalaev.
• Bogdan Guskov is removed from his scheduled Belgrade rematch with Blachowicz and moved into the Ankalaev fight.
• The UFC keeps Blachowicz on the August 1 card rather than cancelling the co-main event.
• Navajo Stirling accepts the matchup with his 10-0 record and five-fight UFC winning streak intact.
• Blachowicz and Stirling are confirmed for the co-main event at Belgrade Arena.

The tactical attraction is the contrast between Stirling’s current rhythm and Blachowicz’s ability to slow fights down. Stirling is six-foot-four, works behind long combinations and has become more aggressive once opponents begin reacting to his feints. Blachowicz is not likely to match that output for every minute. His better route is to damage the legs, make Stirling reset, mix clinches and takedown threats into the striking, and force the younger man to make decisions he has not yet faced in the UFC.

For Stirling, patience may matter more than the knockout streak. Blachowicz has been stopped only once since 2019, and that loss came by submission to Glover Teixeira rather than through reckless trading at distance. Pereira and Ulberg both needed the scorecards. Guskov hurt him badly but still left with a draw. The former champion’s recent results may look untidy, yet he remains difficult to remove from a fight.

For Blachowicz, reputation cannot carry the night. Stirling is not being booked as a ceremonial opponent, and an unranked label does not erase five UFC victories. The Pole must show that experience can still control pace and position when the opponent is younger, taller and arriving directly from two stoppage wins.

UFC Belgrade is headlined by Uros Medic against Daniel Rodriguez, but the replacement co-main event may reveal more about the light heavyweight division’s future. Stirling has the opportunity to cross the gap from prospect to contender in one night. Blachowicz has the harder, more personal task of proving that the gap has not already closed behind him.