Before the NBA season even starts each year, the NBA Draft takes place. This has turned into one of the biggest nights on the NBA calendar, and it is also a great time to make an NBA prop betting wager.  Accumulator – These are not only our most popular bet type but also one of our most confident NBA predictions. Our experts pick out the best NBA bets and put them into an accumulator, where we try to win big from a small stake. BySara Dorn, In terms of talent, the Boston Celtics would appear superior but the Miami Heat have shown enough over the years to think they won't just roll over. Our tipsters don’t just cover NBA predictions! Check out our other sports betting tips here: Let’s start with my two favorite draft position over/under props, both available at Bet365.  Here’s a simple example of Over/Under bets in the NBA: