The ball is in (one's) court British slang informal
The responsibility of taking action or making a decision is now belonging to someone.
All items are sold off up to 50%. The ball is on your court. Buy now or cry later!
The ball is on your court. If you rejected it. Somebody would take it.
Nothing but fortunate chance
If you take a flyer (on something), you take a chance, risk, or gamble on it.
The last opportunity for one to achieve something
A second opportunity
Very little chance of succeeding in doing something
This idiom is derived from the game of tennis. When the ball is on your court. It means you must hit a shot back to the opponent and the game continues. If you can not return a shot or hit a shot out of the court. You lose your points.