Boxing is a popular sport in Wales, and since the early 20th century Wales has produced a notable number of professional boxers including several World Champions. The most notable boxers include Wales' first World Champion Percy Jones; Jimmy Wilde, who is seen as pound-for-pound one of the World's finest boxers and Joe Calzaghe, who ended his career an undefeated World Champion.
Despite the sport of boxing in Wales being heavily identified with the industrial south, it was a common pastime in pre-industrial Wales around the country; and was patronized by the local gentry. In the late 18th century, boxing became more commercialised with promoters and publicans organising paid matches that attracted spectators, and with them heavy betting. In 1797 the skilful 'Whitechapel Jew', Daniel Mendoza fought in a match near Neath and 1819 saw exhibition bouts staged by two of England's greatest bare-knuckle boxers, Tom Cribb and Tom Spring. One of the more common ways for the Welsh public to watch a fight was at race meets. Boxing had always been associated with horse racing, and according to the Racing Calendar the favoured Welsh courses were Brecon, Carmarthen, Knighton, Wrexham and Monmouth. In 1824 the 4,000 racing pundits at Monmouth were also entertained with a fight in which a quarryman called Parry beat Powell in a 103 round contest. The early 19th century also witnessed the emergence of Welsh boxers whose fame extended beyond the confines of the boxing rings. One of the first Welsh fighters of note, despite being born in Southwark in London, was Ned Turner. Turner's parents were both from Montgomeryshire and he was dubbed the "pugilistic prince of Wales' by the North Wales Gazette in 1823.
The opening of the South Wales Valleys to industrialisation in the mid-1800s saw a large influx of commercial immigration. This was followed by an improved transport network, which in turn allowed larger crowds, and larger wagers, to be brought to the sport of boxing. When the Taff Vale Railway was extended to Merthyr Tydfil in 1840, the locals celebrated by a contest between Cyfarthfa champion John Nash, and Merthyr hardman Shoni Sguborfawr. The adoption of boxing as a sport for the underprivileged in industrial Wales is compared, by Welsh historian Gareth Williams, to the living conditions of the emerging towns themselves. Towns like Merthyr, one of the heartlands of the world's iron industry, with its dire health and living conditions, along with a high rate of industrial injury and death, reinforced in the minds of the working class that life was short and brutal. The sport of boxing, though exploitative of the common man, was still a means to rise above the poverty of everyday life and glamourized the primitive.