in the hole
in the hole {adv.} or {adj. phr.}, {informal}
1a. Having a score lower than zero in a game, especially a card game; to a score below zero.
John went three points in the hole on the first hand of the card game.
1b. Behind an opponent; in difficulty in a sport or game.
We had their pitcher in the hole with the bases full and no one out.
Compare: ON THE SPOT.
2. In debt; behind financially.
John went in the hole with his hot dog stand.
It's a lot easier to get in the hole than to get out again.
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Source: A Dictionary of American Idioms