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 -1½ +170 -1½ +180   -1½ +165

Posted at 11:45 AM EST and are subject to change.

Colorado -1½ +180 over Chicago

8:40 PM EST. We’ll put the Alternate Run-Line angle back in play for this series and probably for the entire second half. For all our new readers, we introduced the alternate run-line angle back in 2014 and while you may have heard about it in other places, make no mistake that it originated here. The alternate-run line is very simply to play the underdog at Coors Field spotting -1½ runs because few games are won by one run at this park, very few starters are immune from the extreme park factors and the outcome is almost always a complete toss-up between the two teams.

The White Sox come in as a small road favorite here and that means the Rockies are a play. As for the starters, we have Michael Kopech (RHP - CHW) going up against German Marquez (RHP - COL). Kopech brings a 3.36 ERA but that mark has been the product of a 22% hit rate and 79% strand rate. His skills have been weak (BB/K split of 42/74 in 83 innings) and he's not throwing many strikes (38% ball%). The combination of his high ball rate and flyball tilt gives him some significant blowup potential. Hello Coors Field.

If anyone can thrive in thin air, it's German Marquez, given his groundball tilt and experience at this park. He has posted steady value through July but he’s also been yo-yoing above/below a 4.50 xERA, which may be his fate but we’ll live with whatever he delivers here. Chances are also good that Tony LaRussa makes 5 to 7 beer decisions per game now that he’s on unfamiliar turf and thinks he can outsmart Coors when in fact he’ll be drinking it.