Fairlay offers betting on the series winner between those teams. You can find the event
here. They currently offer @1.625 on the Dodgers winning, and @2.42 on the Astros. They are a sports betting exchange so if you've never used on before, it might be confusing but basically what you want to do is "Lay" the Astros winning, which is betting against the Astros winning. There should be other books that offer it too, but maybe it's hard to find?
the offer offered @ 2.42 on Astros is a sizable multiplication,
but I think more that Astros might not win this match,
when we see that Dodgers is in the best of performance.
then @ 1.625 for Dodgers is enough to guarantee you in installing btaruhan in large numbers.
because maybe this is already 80% victory belongs to Dodgers