An independent investigation into the scandal that engulfed the fast-growing daily fantasy sports industry determined that a DraftKings employee did not improperly use confidential roster information to win $350,000 in a contest on a rival site, the company said Monday. DraftKings has maintained that employee Ethan Haskell didn't use the data to help form a lineup that finished second in a $5 million contest on the daily fantasy site FanDuel.