Sauce bottle without question old, brought up for game (7)
I believe the answer is:
croquet
'for game' is the definition.
(croquet is a kind of game)
'sauce bottle without question old brought up' is the wordplay.
'sauce bottle' becomes 'cruet' (I can't explain this - if you can you should give a lot more credence to this answer).
'without' is an insertion indicator ('without' can be similar in meaning to 'outside').
'question' becomes 'q'.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'brought up' shows that the letters should be reversed in order (in a down clue, letters go up).
'q'+'o'='qo'
'qo' reversed gives 'oq'.
'cruet' going around 'oq' is 'CROQUET'.
Can you help me to learn more?
(Other definitions for croquet that I've seen before include "Game which involves driving balls through hoops" , "genteel sport" , "Game with wooden balls, mallets and hoops" , "Lawn pastime" , "Mallet and hoop game" .)