Are you doing this 'giveaway' or just posted a random twitter link ?
Can you deposit the $25btc with escrow ?
What if you fail to send $25 to any of the members who participated in the giveway? [May be a scam report and neg rep from everyone on this thread ? for wasting time and cheating]
You are right, according to his tweet; he will give $25 to a user if he wins in betting but if not no giveaway? He should update us regarding the sport betting result and if he really wins then make an announcement here who will be the lucky winner.
Upon checking the tweet, it was posted at 2:38 AM Nov 21, yesterday; so the result was already out last night, did Celtics won?
Update:
Celtics won against Mavericks
110-102