Users in online forums are asking whether a DraftKings employee might have used information about lineups to win $350,000 in a competing contest on the FanDuel site. The information detailed the percentages of entrants who selected certain fantasy players.

There are no allegations -- or evidence -- that the DraftKings employee used information about the percentage of players who drafted certain players in last week's contest to finish in second place in the NFL Sunday Million contest run by FanDuel. The contest, which cost $25 to enter, featured $5 million in cash winnings, including $1 million to the winner.

A DraftKings spokesman acknowledged that employees of both companies have earned sizable prizes playing at other daily fantasy sites. Late Monday, DraftKings and FanDuel temporarily banned employees from playing games or in tournaments at any other site, according to a New York Times report.

But it is no secret in the daily fantasy industry that the kind of information the employee tweeted out could be used to draft fantasy teams that include players that aren't in widespread use in any given contest. If those players perform well, the odds of the person holding them winning goes up dramatically.