[NASL] The top seeds in the North American Soccer League are in trouble heading into the second leg of the semifinals. The top-seed Carolina RailHawks trail theNSC Minnesota Stars, 1-0, and have yet to win in five meetings this season. The No. 2 seed Puerto Rico Islanders, the 2010 D-2 Pro League champions, head to Florida for the second leg against the FortLauderdale Strikers trailing, 3-1.

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