The NFL forwarded a letter from the NCAA on Monday to players invited to this month's draft that warns underclassmen about potential rules violations for attending draft parties. The letter, which is from NCAA director of player security services Dena Garner, emphasized that players not eligible for this year's draft can't receive benefits or services such as travel, lodging, meals or entertainment if they attend events. In bold letters, Garner wrote: "Please do not jeopardize the NCAA eligibility of your friends or former teammates."