D.C. United also has a burgeoning rivalry with the Philadelphia Union as the two teams represent two cities separated by only 120 miles. The two teams compete annually for the Atlantic Cup, a competition instituted by the two clubs. D.C. United is also unique among MLS teams for its rivalry with the Charleston Battery of the United Soccer League, as they compete every time they face one another for the Coffee Pot Cup, best soccer training jersey a trophy established by the two sides’ supporters.