A rivalry is building between Barcelona and Athletic Bilbao. Of course, if you go back to the 1980s you would say it was built then and there, and a vicious one it was.
But things simmered down over the next 25 to 30 years, and until recently it just became a normal game. A good one, no doubt, between two historic sides, but nothing to ring on the calendar.
Then they started meeting in finals. Barcelona and Athletic Bilbao met in the 2009 Copa del Rey final, the 2012 edition and then again on the same stage in 2015.