one's best shot
one's A game

One of them had been the best shot he'd ever met.

By doing so, he gave Bush his best shot of the night.

What do you really need to get the best shot?

And sometimes, the best shot is not the person used in the lead.

I gave it my best shot and you turned me down.

So you might as well take the best shot - which is now.

But the leader killed most, as he was the best shot.

Get what you can and I'll give it my best shot.

No one could say she hadn't given it her best shot.

From there, the team would play out the best shot.