Trades the Cubs, Mets need to make to get back to the NLCS

playThe Baseball Tonight team previews Monday's matchup between the Mets and Cubs at Wrigley field with Steven Matz taking the mound for New York against Chicago's Jon Lester. They also discuss Michael Conforto's return to the Mets' lineup. (2:04)On the morning of May 11, the Chicago Cubs woke up with a 25-6 record and an .806 winning percentage courtesy of a remarkable run differential of plus-103 runs. The New York Mets woke up with a 20-12 record and a dominating starting rotation. A rematch in the National League Championship Series looked like a distinct possibility, even a probability.

As always, however: It's a long season. Since then the Cubs have gone 30-30, the Mets have gone 29-30…