The phrase ' Up to Bat' is used to say when one is being called upon to complete a task, particularly a task for which the said person needs to have a certain skill to succeed in completing the given task.
Example in use:"John, come on! Up to bat now, the administration is counting on you".
Interesting fact about Up to Bat
This phrase originates from baseball games when the player is getting ready for his turn to hit the ball.
