Wrexham Association Football Club, founded in 1864 in Wrexham, Wales, is the oldest club in Wales and the third-oldest professional team in the world, currently competing in the EFL Championship. Their storied history includes a record 23 Welsh Cup victories, a remarkable run to the 1976 European Cup Winners' Cup quarter-finals (where they beat FC Porto), and a legendary 1992 FA Cup upset of reigning league champions Arsenal, cementing their reputation as cup "giant-killers." After a transformative 2020 takeover by actors Rob McElhenney and Ryan Reynolds—spotlighted by the hit Welcome to Wrexham documentary—the club achieved a historic three consecutive promotions (2022–2025), rising from the National League to the Championship, a first for any club in England's top five tiers. The club plays at the Racecourse Ground, the world's oldest international stadium still hosting international matches, with a record attendance of 34,445 set against Manchester United in 1957. Wrexham maintains fierce rivalries with English clubs like Chester (the "cross-border derby"), Shrewsbury Town, and Tranmere Rovers, while their European participation via the Welsh Cup was halted in 1995 when rules changed, compelling them to qualify only through the English system.