which looks to have some sort of financial ties. Anyway, they have a series of articles written by "Anonymous Sports Book Manager" that may or may not be true/real, though are pretty entertaining. Here is one on betting baseball and a client named "Mike." Long story short, don't be like "Mike."
Turns out the 20% I’m paying Faithful Assistant is money well spent: he quickly put together that Mike is betting the same teams with both our places. That might be the stupidest piece of betting I’ve ever laid my eyes on. He calls one number, bets the Yanks, then calls the second number and bets the Yanks again. His second price is almost always worse—how much worse, well, it depends on how greedy we feel.