Music mogul Jay-Z has accused Red Sox slugger David Ortiz of foul play, suing the athlete for allegedly stealing his "40/40" club name.

The Brooklyn-born rapper and Yankee fan, 40, whose real name is Sean Carter, sued Ortiz on Thursday for naming a Dominican Republic nightclub Forty Forty, which Jay-Z and his business partner say is too close to their chain of 40/40 Club sports lounges, according to published reports.

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Ortiz's club and Web site have caused “marketplace confusion and damage,” states the lawsuit, filed in Manhattan federal court. The baseball star, 34, visited Jay-Z’s 40/40 Club in Chelsea several times before opening his own “infringing” club, the suit says.

In baseball terms, 40/40 refers to the feat of stealing 40 bases and hitting 40 home runs in one season.