Devlin, Belfast Celtic's physiotherapist. Devlin helped Hazlett overcome the injury and the close relationship persuaded Hazlett to join Belfast Celtic in 1948. He described the transfer as "the best move I ever made", adding "I got good wages, a job and settled down quickly. Belfast was so like Glasgow." As well as being provided a day job by the club, he received wages of between £10–12 a week. In his first season with Belfast Celtic, Hazlett played in a derby match against Linfield that ended in violence after Celtic scored a late equaliser in a match that saw two men sent off and two Linfield players taken off injured. At the end of the match, Celtic forward Jimmy Jones was attacked by opposition supporters, being pushed over a pitch side wall before being kicked so badly he suffered a broken leg. His teammates rushed to help him, with Hazlett receiving a punch to the face during the melee. The club folded at the end of the season with Hazlett featuring in its last ever league match, a 4–3 victory over Cliftonville on 21 April 1949. He was also part of the side that toured the United States in 1949, scoring in a 4–2 victory over Detroit Select at the University of Detroit Stadium, although he missed the side's 2–0 victory over the touring Scotland national team through injury. However, Hazlett's experience of Scottish football proved invaluable in assisting manager Elisha Scott to plan for the fixture. The tour was the last set of matches the club played before folding having resigned from the Irish League. Football League Hazlett joined Football League side Bury in June 1949 for a fee of £2,500. He made more than 100 appearances during a year spell with the club. In 1952, he played in a trial match for First Division side Cardiff City and impressed manager Cyril Spiers enough for him to complete a £5,000 transfer soon after. He made his debut for Cardiff in the second match of the 1952–53 season against Middlesbrough and scored in his home debut during his next appearance in a 4–0 victory over Sheffield Wednesday. Despite playing in 6 of the club's first 8 matches, he was dropped in favour of Mike Tiddy and made only one further league appearance. At the end of the season, he was released by the club having made seven league appearances. He subsequently