1999–2000 Welsh-Scottish League

Cardiff won the inaugural Welsh-Scottish League. However they lost their final match against Swansea at home thus losing an unbeaten home record that dated back to December 1997. The points system was complicated by the Rugby World Cup and only two points were awarded for a win prior to November 1999. Both Cardiff and Pontypridd were deducted points by playing Edinburgh during this World Cup period; although the matches were scheduled to take place outwith the World Cup.

1999-2000 League Table
The top 5 Welsh teams plus Edinburgh and Glasgow qualified for next season's Heineken Cup.