Derrek Lee hit a pair of home runs in his debut with the Pirates on Monday night, but the Cubs won the game 5-3 at PNC Park. It was Pittsburgh's fourth straight loss as they aim to win the National League Central division crown. Lee, 35, spent six seasons in Chicago but swears he didn't have inside knowledge of starter Carlos Zambrano. He added he didn't feel strange stepping in the box against Zambrano, noting he did the same last year after the Cubs shipped him to Atlanta.