Get your taxes done using TurboTax

Did you receive a 1099-misc instead of a W-2G?   @SColvin   This thread is from last year, so can you clarify your situation?    You only need to negate the 1099-misc in the other reportable income section if you reported the full amount in the gambling winnings section as well as the 1099-misc section.   

Gambling losses are entered on the very next screen after you enter your gambling winnings.   All gambling winnings get entered in the same place (Less Common Income) - whether or not - they are reported on a W-2G.