Cardinals and Cubs announced for 2020 MLB London Series - SportsPro
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Cubs and Cardinals making most of MLB's London Series - ESPN
MLB London Series: Contreras has big game against former team, Cardinals erase early 4-0 deficit in Game 2 win
Cardinals vs. Cubs: A Long-Simmering Rivalry - The New York Times
Cubs, Cardinals leveraging rivalry to be ambassadors for baseball in London - Chicago Sun-Times
Cardinals' Miles Mikolas ejected in 1st inning after plunking Cubs' Ian Happ, who hit catcher with swing