Cubs acquire RHP Carlos Guzman from Tigers for Zach McKinstry
Who will make the Cubs' Opening Day roster? Where things stand with a few spots left - The Athletic
Chicago Cubs Top 52 Prospects
Cubs Trade Zach McKinstry to Tigers for RHP Carlos Guzman - Cubs Insider
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Cubs Deal Zach McKinstry to Tigers for Minor-League Arm - Cubs - North Side Baseball
Cubs Trade INF Zach McKinstry to Tigers for RHP Carlos Guzman - On Tap Sports Net
Detroit Tigers News - In Play! magazine
Tigers acquire INF Zach McKinstry in trade with Cubs - Newsday
Detroit Tigers News - In Play! magazine
2019 40-Man Roster Deadline Transaction Tracker — College Baseball, MLB Draft, Prospects - Baseball America