By Lisa Beilfuss And Brian R. Fitzgerald 

Yahoo Inc. and the National Hockey League have barred employees from playing in paid fantasy-sports contests, moves that come amid questions over whether workers at big fantasy-sports companies have access to inside data.

Yahoo, a relative newcomer to paid fantasy sports, said Friday that employees are no longer permitted to play paid, daily contests on any site. Yahoo workers already were banned from playing on the company's site.

The NHL said Friday that employees are banned from playing this season, which started Wednesday.

The purveyors of the industry's biggest fantasy sites, FanDuel Inc. and DraftKings Inc., came under fire this week after an employee of one startup with access to inside data won big money on the other's site. Both companies said they would permanently ban employees from playing in daily fantasy contests for money, and would enlist attorneys to review their processes.

Such sites run online contests in which people draft virtual teams of professional athletes and compete against each other based on the athletes' real-world performances.

The controversy began after a DraftKings employee recently said on an online message board that he prematurely released data about contestants' lineups. That same week, the employee won $350,000 playing in a top contest on FanDuel. DraftKings said the early leak of data was an accident, and both companies said the data didn't lead to the victory.

For Yahoo, the venture into paid fantasy sports is new. Seeking to supplement its stagnant advertising business, the Internet company in July said it would enter the legal online gambling market with a new fantasy-sports mobile app.

The NHL is an investor in DraftKings as well as an exclusive partner, and said this week it is monitoring the situation at the company.

Separately, a class-action suit was brought on Thursday against FanDuel and DraftKings, alleging the companies violate laws in Kentucky, Massachusetts and New York. Representatives for FanDuel and DraftKings declined to comment.

An estimated 56.8 million people in North America are playing fantasy sports this year, the Fantasy Sports Trade Association said this summer. They spend an average of $465 annually on these games, the association said.

Brian R. Fitzgerald contributed to this article

Write to Lisa Beilfuss at lisa.beilfuss@wsj.com and Sharon Terlep at sharon.terlep@wsj.com

 

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(END) Dow Jones Newswires

October 09, 2015 15:43 ET (19:43 GMT)

Copyright (c) 2015 Dow Jones & Company, Inc.
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