IDIOM ►

a jump ball

Meaning 1
A basketball game is started by the referee throwing up the ball between two players who try to tap it to a member of their team. It is also used when two opposing players have joint possession of the ball.
Sentence 1
The referee called for a jump ball because she could not determine which player controlled the ball.
Meaning 2
Control issues: The inability to determine anything.
Sentence 2
It is a jump ball. The two proposals are so close.