Undecided where one might throw a ball? (2,2,3,3)
I believe the answer is:
up in the air
'undecided' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for up in the air that I've seen before include "on the wing" , "position of hawk or dove?" , "Where are the clouds" , "Where skier may be seen" , "Where hang-glider may be spotted" .)