Johnny Walker, once a rising light heavyweight prospect known for highlight-reel knockouts, is attempting a career revival after moving up to heavyweight. The 34-year-old Brazilian made a successful divisional debut at UFC 332, stopping Mick Parkin with a first-round knee. He now faces Waldo Cortes Acosta in a main event bout on short notice, aiming to build momentum in his new weight class.
Walker's initial UFC run in 2018-2019 featured spectacular finishes but stalled after a knockout loss to Corey Anderson at Madison Square Garden. Inconsistent performances and difficult weight cuts to 205 pounds hampered his progress. Walker cited his 2022 fight against Dominick Reyes as the turning point, revealing he felt dizzy and weak from the extreme cut, leading to a split-decision loss.
Now training at the Porrada Training Center in Las Vegas under six-time Muay Thai world champion Ray Sefo and alongside top heavyweight contender Alexander Volkov, Walker emphasizes consistency, nutrition, and injury prevention. "I have the dream team, and it's just been amazing," he told CBS Sports. "It makes me a better fighter every day."
Despite planning a gradual transition, Walker accepted the main event against Cortes Acosta on nine days' notice, calling it an opportunity he could not refuse. "I'm a carnivore, and the meal fell on the plate of the most carnivore guy," Walker said. "Do you think I'm going to let it go? No, I'm going to eat it."
