Valter Walker will take an unusual heavyweight weapon into UFC Fight Night: Ankalaev vs Guskov when he meets American Thomas Petersen in Abu Dhabi on July 25, 2026. The Moscow-based Brazilian is currently listed at No. 11 in the Meta UFC Rankings, and his climb has been built around a submission that has become his defining answer inside the Octagon: the heel hook. Walker says his aim is not merely to use the technique once more, but to keep proving that a heavyweight can build a sustained run around it.
That ambition has invited Walker to compare his path with that of UFC Hall of Famer Ronda Rousey, the first female champion in UFC history. Rousey assembled eight armbar victories in a row before winning UFC gold, according to Walker’s reference to her career. Walker has asked why he cannot create a similar sequence with heel hooks. The comparison is about a repeated specialist finish, not an assertion that the two fighters have identical careers. For Walker, it is a way to explain the confidence he has found in a technique he says he trains every day.

A heel-hook streak changed Walker’s UFC run
Walker’s UFC story began with a unanimous decision loss to Lukasz Brzeski in April 2024. Four months later, at UFC 305, he stopped Junior Tafa with a first-round heel hook. It was the first heel-hook finish of Walker’s career, and he said succeeding with it in the UFC gave him greater belief in the skill. That confidence was followed by more work in the gym and a willingness to look for the move from different positions during fights. The result has been a distinctive run: Walker followed the Tafa finish with three additional submission victories, each in the first round and each by heel hook. Those four straight first-round heel-hook submission wins are the central form line behind his place in the heavyweight rankings. In a division Walker described as often focused on punching power, his run has instead made grappling and leg attacks the feature of his approach.
Walker said his coach repeatedly urged him to believe in the technique, including before his most recent fight, when he admitted he did not fully believe he could land it again. He tried it and it happened, reinforcing the cycle that has shaped his recent results: success in a fight, increased confidence, and continued drilling. Walker said he has worked on the move for about two years and trains it every day, even when a session is designated as kickboxing. His explanation is that he and his sparring partners still mix in takedowns and heel hooks. That routine gives context to why he sees the move as more than an opportunistic finish.
Petersen bout brings a new test
Walker faces Petersen at Etihad Arena in Abu Dhabi, where UFC Fight Night: Ankalaev vs Guskov is scheduled to begin with prelims at 9am ET and the main card at 12pm ET. Walker has been direct about his expectation that Petersen will seek to attack his leg. Walker sustained a broken fibula in his fight with Louie Sutherland at UFC 321, but said his leg is fully healed. He also said he does not believe Petersen has had enough time to improve his heel-hook defense beyond Walker’s ability to attack the submission. That is Walker’s pre-fight view, not a confirmed prediction about how the contest will unfold. What is confirmed is the tactical question created by the matchup: Petersen has been given a clear account of the finish Walker wants, while Walker arrives with a repeated first-round result that has carried him into the rankings. A fifth consecutive heel-hook submission would extend the pattern Walker is trying to turn into his signature.
- Walker lost a unanimous decision to Lukasz Brzeski in his April 2024 UFC debut before beginning his heel-hook run.
- Walker submitted Junior Tafa in the first round at UFC 305, then added three more first-round heel-hook submission wins.

| Confirmed point | Supported detail |
|---|---|
| Current ranking | Walker is listed No. 11 in the Meta UFC Rankings. |
| Upcoming matchup | Walker faces Thomas Petersen at UFC Fight Night: Ankalaev vs Guskov on July 25, 2026. |
Walker’s Abu Dhabi appearance is therefore significant because it places a clearly established specialty against a new opponent while he is already inside the heavyweight rankings. His remarks make his target plain: keep landing heel hooks and pursue the type of repeat finishing run he associates with Rousey. Petersen’s response in the cage remains unknown, but Walker enters the scheduled fight with four consecutive first-round heel-hook submission wins and a technique he says he has made part of his daily preparation.
Sources: UFC.com
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