Marcin TyburavsValter Walker

Before that, Serghei Spivac caught him in an armbar at 1:44 of the first round back in August 2024. The Polish veteran did show he's still got it with that doctor stoppage win over Jhonata Diniz at UFC 309, landing 153 strikes at an insane 82% clip. He also grinded out a decision over Mick Parkin in London. Here's the thing, Tybura's an experienced grappler with solid submission defense, but Walker's heel hook game is different. Everyone knows it's coming and they still can't stop it. Tybura's got the striking to keep this standing, but one scramble, one slip, and Walker's diving for that ankle. The veteran needs to stay patient and use his range, because getting into a grappling exchange with this Brazilian is playing with fire.

This is a classic striker versus specialist matchup. Can Tybura's experience and striking keep him safe, or does Walker add another victim to his heel hook highlight reel? The wrinkle here is Walker's recent injury disclosure, which adds an interesting layer to this heavyweight clash. Walker revealed his leg still hasn't fully recovered from a fibula fracture he suffered back in October 2025, though he expects it to be healed in time for Seattle. The Brazilian has been dealing with lingering pain from the injury, which is a wild thing to admit when you're fighting a veteran like Tybura who could absolutely exploit any weakness. Between his UFC bookings, Walker stayed active by submitting Zion Clark with a rear naked choke at Karate Combat 59 on February 13th. After that win, he called out his own brother Johnny Walker for a March 28 Karate Combat matchup, showing he's keeping busy while managing that leg injury.