Heel hook machine Valter Walker has joined the upcoming UFC Seattle Fight Night card.
Heavyweight Walker (15-1), who has won his last four fights in the octagon via heel hook submission, will face veteran Marcin Tybura (27-10) at the event, which takes place at Climate Pledge Arena in Seattle, Washington on March 28, 2026.
News of the booking was first reported by Mmas Mania.
Walker, known as ‘The Clean Monster’, may want to rebrand himself as ‘Whole Monster’. He holds the record for both consecutive heel hook submissions and overall submissions of that type (tied with Rousimar Phalares) in the UFC, which has earned him a step up in the competition in the form of Tybura.
Ranked No. 10 in the weight class by the UFC’s official rankings (Valter Walker himself is ranked No. 14), Tybura is 2-2 in his last four fights, losing to Ante Delija. The Polish star, a former M-1 heavyweight champion, will enter a decade with the UFC starting in April and has shared the octagon with some of the best, including Fabricio Werdum, Andre Arlovski, Derrick Lewis, Alexander Volkov and current UFC heavyweight champion Tom Aspinall.
UFC Seattle has not yet announced an official main event, but the following matchups have been added to the card:
- Alexa Grasso vs. Maycee Barber
- Valter Walker vs. Marcin Tybura
- Casey O’Neill vs. Gabriella Fernandes
- Nicolle Caliari vs. Caroline Foro
- Mansur Abdul-Malik vs. Yousri Belgaroui
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