Today is a mailbag episode, and oh boy was it necessary. Podcasting through a cold, I powered through the fact that the Cubs -- and the rest of the NL Central -- were off on Thursday. In the first segment, I previewed the weekend set with the St. Louis Cardinals that begins tonight. Jon Lester will face Michael Wacha. Later, I answered questions that included talk about MLB expansion, the backup catcher, and whether the Aroldis Chapman trade was worth it.
Be sure to follow us on Twitter @LockedOnCubs and email any questions or comments to lockedoncubs@gmail.com. I appreciate all the interaction, and if you sent along a question or topic idea that I didn't cover it's almost certainly because it's a topic I've hit on expans
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