Dismissal by Small — success! Starting to get movement with ball (8)

'movement with ball' is the definition.
I can't tell whether this definition defines the answer.

'dismissal by small success starting to get' is the wordplay.
'dismissal' becomes 'out' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'by' means one lot of letters go next to another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'success' becomes 'win' (I've seen this in another clue).
'starting to' indicates taking the first letters.
The first letter of 'get' is 'g'.
'out'+'s'+'win'+'g'='OUTSWING'

Can you help me to learn more?