You can place futures bets through a season, but the closer you get to the result, the odds will be more set and generally less in your favor.
Hard Rock Sportsbook offers teasers on Basketball and Football currently. Of course teasers do reduce the odds and lessen your potential payout, but it does make it more likely for you to win. A 4-point teaser means moving a spread line from +5 to +9, which is a much more likely spread for a team to cover.
The idea of a teaser is to adjust the points spread of something like a basketball game to be more in your favor. Not every betting site offers teasers, which does help set Hard Rock Sportsbook a little bit apart from other smaller sportsbooks.