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Watch out, Google's after your fans. Derrick Eckhardt, a writer at fantasy-sports news site RotoNation, noticed that Google's serving up sports scores to mobile users. Eckhardt's sources tell him that Google has been looking at the sports market for a year, and greenlit a secret project to enter the sports-information business last November. There's no Google Sports portal, and no sign of the effort on Google's regular Web search. Should the likes of ESPN and Yahoo Sports be worried? Google Finance has yet to make a dent in Yahoo Finance. But remember how Google used to point users who typed in street addresses to Yahoo Maps? After Google created its own maps site, the links to Yahoo Maps swiftly disappeared. (Photo by Derrick Eckhardt)