It has been declared a "Bubble Match," which sounds fun.

In reality, the first South Wales derby in two years and the first meeting of Cardiff City and Swansea City in the Premier League on Sunday will see a police operation organized with military precision. The clashes — an appropriate word — between the clubs over the past four decades have generally been spiteful, violent and anything but fun.

Bubble matches and restrictions on fans are used in extreme cases where clubs and police fear a high risk of disorder off the pitch. Matches between Swansea and Cardiff tick every ignominious box in this respect.