
Fight night · UFC
Walker will not fight his brother
Walker meets Cortes Acosta in the main event on Saturday, November 7, at the Meta Apex. Valter has won five in a row, each by first-round submission.
UFC · Heavyweight

16–1–0
6 KO · 6 SUB · 4 DEC
Valter Walker fights at heavyweight in the UFC.
He submitted Thomas Petersen with a calf slicer at 1:32 of the first round on July 25, 2026. That was his fifth win in a row, and each of the five was a first-round submission. The fight before the streak was a unanimous decision loss to Lukasz Brzeski.
He is the half-brother of Johnny Walker, trains at Gor MMA in Moscow, and Rio das Ostras is home.
He waited tables at a pizza restaurant, won three belts in MMA Series, one in Titan FC, and one in Brazil Arena Global, and turned pro in 2020.

Fight night · UFC
Walker meets Cortes Acosta in the main event on Saturday, November 7, at the Meta Apex. Valter has won five in a row, each by first-round submission.
| Date | Opponent | Result | Method | Round | Time | Event |
|---|---|---|---|---|---|---|
| Thomas Petersen | Win | Submission (calf slicer)Performance of the Night. | 1 | 1:32 | UFC Fight Night: Ankalaev vs. Guskov | |
| Louie Sutherland | Win | Submission (heel hook)Performance of the Night. | 1 | 1:24 | UFC 321 | |
| Kennedy Nzechukwu | Win | Submission (inverted heel hook)Performance of the Night. | 1 | 0:54 | UFC on ESPN: Lewis vs. Teixeira | |
| Don'Tale Mayes | Win | Submission (heel hook) | 1 | 1:17 | UFC Fight Night: Cannonier vs. Rodrigues | |
| Junior Tafa | Win | Submission (heel hook) | 1 | 4:56 | UFC 305 | |
| Lukasz Brzeski | Loss | Decision (unanimous) | 3 | 5:00 | UFC Fight Night: Allen vs. Curtis 2 | |
| Alex Nicholson | Win | TKO (retirement)Won the Titan FC heavyweight title. | 4 | 0:50 | Titan FC 82 | |
| Cassio Oliveira | Win | KO (punches)Won the MMA Series heavyweight title. | 2 | 1:47 | MMA Series 67 | |
| Ramdan Mohamed | Win | TKO (punches) | 1 | 2:27 | MMA Series 64 | |
| Bunyod Akulov | Win | TKO (punches) | 2 | 2:52 | MMA Series 60 | |
| Ruslan Medzhidov | Win | Decision (unanimous) | 3 | 5:00 | MMA Series 57 | |
| Andrey Zhukovsky | Win | Decision (unanimous) | 3 | 5:00 | MMA Series 54 | |
| Wagner Maia | Win | Decision (split)Won the vacant Arena Global heavyweight title. | 5 | 5:00 | Arena Global 16 | |
| Aybek Kobenov | Win | Decision (unanimous) | 3 | 5:00 | MMA Series 47 | |
| Denis Kazakov | Win | TKO (retirement) | 1 | 4:50 | GOR MMA | |
| Kertis Sakha Toyem | Win | Submission (rear-naked choke) | 1 | 1:06 | FFC: Selection 5 | |
| Dmitriy Plyukhov | Win | TKO (punches) | 2 | 2:46 | Studsport: St. George Cup 5 |