First of all don't confuse this for a "Sports" movie.
It revolves around the NFL Draft, an annual event where the NFL managers are selecting players to join their teams.
It is a USA football thing, so if you are living in another continent, it is rather difficult to understand the rules and even more the point of this whole charade.
About the rules is something of a Poker game. At least as it looks in this picture. The manager of team A is on the phone with the manager of team B and they talk things like "I am giving you 2 of my first picks of the second round to give me your first pick for the next 2 years..." and so on.
Again, this is NOT about who wins a game or a trophy. This is merely about picking players whom you think they might be useful to your team. In the actual games they may proved to be bad choices, or injured or whatever, and despite being happy about your choices in the NFL draft, eventually to lose games and the season.
Now as movie "Draft Day" is carefully designed.
The direction and editing are trying to be "edgy" with unique split screen effects during the numerous phone-calls between the team managers. You can see for example Kevin Costner (who plays the lead role as an experienced yet unconventional manager) in a split screen walking into the other side of the frame where the manager of the other team is.
The music has a certain triumphant feeling without being to much in your face and the whole production is carefully designed.
I point that out because in this movie you have constantly the feeling that you are seeing great things taking place. Like every little decision is something that could change the world. But in reality all these "decisions" are something of a micromanagement. In the end and if you actually pay attention, what is happening and what the characters are talking about is totally uninteresting...
...and for the rest of the world, outside the US, confusing and pointless.
