Question about schedule a poker tournament tickets

I have heard I can use it. But here someone said 'No'.
So I wanted to make sure which is right.
accourding to irs(https://www.irs.gov/uac/Newsroom/Five-Important-Tips-on-Gambling-Income-and-Losses-1).
Keep accurate records. If you are going to deduct gambling losses, you must have receipts, tickets, statements and documentation such as a diary or similar record of your losses and winnings. Refer to IRS Publication 529, Miscellaneous Deductions, for more details about the type of information you should write in your diary and what kinds of proof you should retain in your records.
it says keep the tickets.
Does it means I can use poker buy-in ticket as deduction??
also, lottery scratch offs???
Deductions for gambling winnings.
Thanks.