This piece brings up some interesting points, although to be honest I'm not sure whether MLS and the USL are rivals as much as complementary. But given the history of the game in the United States, there's probably a lot to talk about.
MLS vs USL and The Next Great Soccer War
For as long as professional soccer has existed in the United States, there has been drama and conflict between the alphabet soup of entities and organizations controlling the game. The casualties of these conflicts have been hundreds of clubs, and entire leagues, dating all the way back to the...
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