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I get the idea, but if you're betting within a particular sports book the only equal return you could guarantee would be negative, since they offer less than fair odds.
I was building off of this idea, although I didn't know it's name, when I came up with [RBOA}(#342765).
Stumbled on this thread, and damn! I used to do sports betting, even coded a dutching calculator in C#. If anyone needs the code, just let me know.
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