At the end of July soccer fans around the world received an unusual gift: an extra game between Spanish rivals Barcelona and Real Madrid. Played in the Dolphins’ Hard Rock Stadium and dubbed El Clasico Miami, it was a thrilling showdown that opened with a goal from Lionel Messi and wound up being a close-fought battle throughout, resulting in a 3-2 Barcelona win. And that match was the highlight of the International Champions Cup (ICC), the annual pre-season tournament that just wrapped up its fifth year of bringing top-flight European clubs to the United States.