Heel hook machine Valter Walker has joined the upcoming UFC Seattle Fight Night card.
Heavyweight Walker (15-1), who has won his last four bouts inside the octagon via heel hook submission, will take on veteran Marcin Tybura (27-10) at the event, set for the Climate Pledge Arena in Seattle, Washington on March 28, 2026.
News of the booking was first reported by MMA Mania.
Walker, known as “The Clean Monster,” may want to rebrand himself the “Heel 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 competition in the form of Tybura.
Ranked #10 in the weight class per the UFC’s official rankings (Valter Walker himself is at #14), Tybura is 2-2 in his last four bouts and coming off a loss to Ante Delija. The Polish star, a former M-1 heavyweight champ, will hit a decade with the UFC as of 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 does not yet have a main event officially announced, but the following match-ups are attached 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
