Wales Rugby

Wales punches so far above a population of three million that the golden generations of the 2000s and 2010s built one of the most fiercely loyal fanbases in the sport, rooted in a rugby culture running through the valleys as deep as anything in the country's identity. The Principality Stadium with its roof closed and 74,000 voices singing before kickoff is a genuinely unmatched pre-match atmosphere, the kind of occasion opposing teams admit unsettles them before a ball is kicked. Grand Slams under Warren Gatland gave this fanbase real, sustained success to match the passion, which made the more recent rebuilding years sting harder than a less accomplished nation would feel it. Welsh support has never been fair-weather, it's tied to identity, not results, but this fanbase absolutely remembers what a competitive Wales looks like. The Welsh Rugby Union has the history; the anthem before kickoff is the actual experience.