For the first time in three decades of modern sports sponsorship, Adidas won't have a team playing in the European Championship final. Even worse: when host France and Portugal meet on Sunday in Paris, everyone will be wearing jerseys emblazoned with Nike and its ubiquitous swoosh. The two have battled in the $5 billion global soccer market since the 1990s. And nothing is more attractive to them as top national and club team jerseys

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