leave it all out there
English edit
Etymology edit
The pronoun it refers to the player's capacity for effort and physical endurance; out there refers to the sports field.
Verb edit
leave it all out there (third-person singular simple present leaves it all out there, present participle leaving it all out there, simple past and past participle left it all out there)
- (sports) To strive to the limits of one's capacity; to give one's all when playing a game.