It followed Cardiff's League Cup first round second leg tie at Swansea's Vetch Field where Cardiff won 2-0 (2-1 on aggregate).

BBC: Supporters can be the winners

If you pave an empty field, drivers will park in whatever way is most convenient for them but that in aggregate can turn out to be random, confusing, and at times, dangerous.

FORBES: Connect

From the 2003 through the 2010 season the playoff field consisted of eight teams, with the conference semifinals played on just such a two-legged aggregate goal format, the conference finals a single game at the home of the higher seed, and MLS Cup hosted at a pre-determined often-neutral sight regardless of who was in the final.

FORBES: How the MLS Playoff Format Punishes Ambitious Teams