After being trained by Man Mountain Dean, Holmback made his professional wrestling debut on January 22, 1942, using the ring name Yukon Eric. Yukon Eric utilised a strongmanin-ring persona, and as part of the persona, he was announced as being from Fairbanks, Alaska and always wore plaid wool shirts, worn open to show off his chest. He also was known for whipping his opponent into the ropes so that they would bounce back into his chest. On January 30, 1948, Yukon Eric defeated Sonny Myers to win his first professional wrestling championship, the NWA Texas Heavyweight Championship. He held the championship for a week, before losing it to Miguel Guzmán on February 6. After this, he moved to Southern Ontario, where he spent the majority of his wrestling career. Two years later, on February 15, 1950, he defeated Bobby Managoff to win the Montreal Athletic Commission's International Heavyweight Championship. During a match against Wladek Kowalski in 1952, Kowalski botched a knee drop, and legitimately severed part of Holmback's ear. Afterward, Kowalski went to visit Holmback in the hospital, but began laughing at the bandages wrapped around Holmback's head. The incident cemented Kowalski as a heel and prompted Kowalski to rename himself Killer Kowalski. A rematch between the two on January 14, 1953 at the Montreal Forum was the first ever televised wrestling match in Canada. He won the NWA Canadian OpenTag Team Championship twice with Whipper Billy Watson, with their first reign beginning on February 13, 1958, when they defeated Fritz Von Erich and Gene Kiniski. They lost the championship just over a month later to Stan and Reggie Lisowski on March 20, 1958. Later that year, he won the championship for the second time when he teamed with Dara Singh to defeat Stan and Reggie Lisowski on August 7, 1958. Three years later, on December 28, 1961, he won the NWA Canadian Open Tag Team Championship for the second time with Watson, and the third time overall, when the pair defeated John and Chris Tolos. He later moved to Florida, where he wrestled until the time of his death in 1965. In 2007, Holmback was one of the honorees of the Cauliflower Alley Club's Posthumous Award, along with Betty Jo Hawkins.
After divorcing his wife and suffering financial problems, on January 16, 1965, Holmback drove to the church inCartersville, Georgia where he had gotten married, and committed suicide by shooting himself in the mouth with a.22 caliberpistol. He was reported missing when he failed to show for matches in Jacksonville, Florida and St. Petersburg, Florida. His body was found the next day in his car in the church parking lot. He was survived by his three children, two daughters and a son.
