That would be the promotion runs from the new sportsbooks. Those are very limited and very short time so you shouldn't count on it especially if it weren't run on 'safe bet' match. Instead, it would be best if you looked for a welcome/new reg bonus, which only requires a small minimum deposit for an instant amount of money for you to bets. I think I saw yas bet that open recently have such program, 'deposit minimum $10 to get $200 welcome bonus'.