Record (Few may know it but Marciano started his ultimately amazing career in Wales. A handful of Marciano's first fights were in Wales while the 'Brockton Blockbuster' was stationed in south Wales during World War II. The heavyweight hero was a GI in the United States Army - and one of Marciano's first fights was against a man who himself went on to be a sporting great. Former Welsh rugby captain Dr Jack Matthews fought the now immortal Marciano at RAF St Athan air base in the Vale of Glamorgan in 1943. Dr Matthews, a member of Wales' Grand Slam-winning side of 1950, remembered: "I was part of the boxing team of the Welsh National School of Medicine at Cardiff University. "We went to St Athan to box the RAF team and Marciano was in the team. "As I climbed into the ring inside the St Athan gym, his team-mate told me 'Rocky has knocked out his last six opponents.' "I replied 'well, he won't make it seven.' And I was true to my word!" Only six professional challengers took Marciano, who was known as the greatest slugger in boxing history, the full distance - but a 23-year-old Matthews did too. "It was a four-round contest and no winner was declared," recalled the Welshman, a man famed for his bone-crunching tackles. "I can't remember much about the fight, I don't think about it. It's just something I did. Marciano turned pro in 1947 and defeated Jersey Joe Walcott to become undisputed heavyweight champion of the world in September 1952. Unbeaten Marciano won 43 of his 49 professional fights by way of knock-out and kept his world crown until his retirement in 1955. Dr Matthews, one-time doctor to the British Boxing Board of Control, went on to tour New Zealand with the British and Irish Lions in 1950 and won 17 caps in the centre for Wales after the war.)