Practice Game

I'm a practice Game
For others to play and learn
I'm a pawn in chess
Sacrificed for the outcome

I'm a practice Game
For him to try out his moves
I'm the first throw in a Game
I begin the Game

I'm a practice Game
The outcome does not matter
I'm the dummy hand in cards
A reference for future

I'm a practice Game
I alone know the Game rules
I just don't know I'm playing
The score is hidden from me

I'm a practice Game
That I always lose