Pregame

[Sonia]

n. To drink before going to a party. This most often happens because they party where you are going to will be [carding] and you are under or because you want to drink something hard to start your night off. Often [pregaming] happens at the house and involves [taking shots].
v. The act of partaking in a pregame.

[Raeanne Dimick]

Denoting or relating to an event that occurs immediately before a particular sports game.

[Tina]

a television show before a sports game: