In my opinion, luck isn't a part of this game.
Of course luck is part of the game.
Let's say that you have a level 7 doctor. And you are playing in the best of 3 finals in the ABBL.
You win the first game, your opponent wins the second game.
It is down to a final game decider.
In the first half your 2 starting players get injured.
This causes you to lose the game.
You got unlucky.
Your opponent got lucky.
Luck exists.