Originally <a href='http://www.sportsbookreview.com/forum/showthread.php?p=24543905'>posted</a> on 09/23/2015:

Quote Originally Posted by DiggityDaggityDo View Post
Are professional athletes allowed to play on these fantasy sites?

I would think not, but has this been brought up?
Yes they can. I wrote an MBA paper about 30 pages or so. Each leagues (MLB is toughest, NHL lightest) has slightly different rules but in each of them a player will be banned for gambling on their own sport, and 'penalized' for gambling in general.

Many players have been found to bet on other sports and get a slap on the wrist. No punishments have been handed out yet for players 'playing' fantasy sports or DFS. In fact many pro athletes have openly bet on fantasy.

Last season Wes Welker was mic'd up and heard on national TV on the sidelines telling Peyton who he had on his fantasy team, which included them two plus Demaryius Thomas.