"The data that DraftKings acknowledged was released by its employee, Ethan Haskell, showed what particular players were most used in all lineups submitted to the site’s Millionaire Maker contests. Usually, that data is not released until the lineups for all games are finalized. Getting it early, however, is of great advantage to make tactical decisions, especially when your opponents do not have the information at all. A spokeswoman for DraftKings said Haskell simply made a mistake and that the company was certain that he did not use the information improperly. She declined to go into specifics about the safeguards or the company’s auditing policies."

I'm guessing that Haskell assumed that if 60% of people on DraftKings were going to pick [Fantasy Player X], then about 60% of people on FanDuel would pick [Fantasy Player X], and knowing so ahead of time informs the odds on each bet?

This reminds me of the Capital One/Chipotle incident (http://www.bloombergview.com/articles/2015-01-23/capital-one...).