Cubs pitcher Carlos Zambrano is unsure about whether or not he'll return to the World Baseball Classic for Venezuela next year, according to The Chicago Sun-Times. "I don't know," said Zambrano, who pitched in the inaugural WBC in 2006. "I haven't made a decision." Mets pitcher Johan Santana and Tigers hitters Miguel Cabrera, Carlos Guillen and Magglio Ordonez have told the Venezuelan media they won't return to the team after playing in 2006.