Sosa Homers As Cubs Club Pirates 7-2 CHICAGO - Sammy Sosa homered for the first time in more than two weeks and Derrek Lee drove in three runs to lead the Chicago Cubs to a 7-2 victory over the Pittsburgh Pirates on Monday night.    Moises Alou and Neifi Perez also homered for the Cubs, who pulled within a half-game of idle San Francisco in the NL wild-card race...