The Chicago Cubs are going to have to be big players at the upcoming trade deadline to maintain their lead in the National League Central. Chicago got off to a blazing start and held a division lead as large as 6 1/2 games. Could they find that perfect fit for their bullpen from the worst team in the sport? On Friday, Nick Selbe of Sports Illustrated predicted that the Cubs would trade for Colorado Rockies reliever Jake Bird, who will probably be his team’s lone All-Star this season thanks to a team-high 1.8 bWAR.