This article was originally published on www.si.com/mlb/cubs as Cubs Pursuit of MacKenzie Gore Slows As Trade Discussions Hit Snag. The Chicago Cubs are in a heated battle with the Milwaukee Brewers for the NL Central and with the trade deadline approaching they are trying to address their biggest weakness, the depth of their starting pitchers.

An MLB insider of ESPN reveals the key holdup in a potential blockbuster deal that would see the Chicago Cubs acquire MavKenzie Gore.