Second eleven starts acquiring game scorer (6)
I believe the answer is:
scribe
'scorer' is the definition.
(a scribe is a pointed tool for marking or scoring)
'second eleven starts acquiring game' is the wordplay.
'starts' indicates taking the first letters.
'acquiring' indicates putting letters inside.
'game' becomes 'crib' (crib is a kind of game**).
The initial letters of 'second eleven' is 'se'.
'se' placed around 'crib' is 'SCRIBE'.
(Other definitions for scribe that I've seen before include "One writing documents" , "One used to copy out documents" , "Mark with a sharp point" , "Ancient copyist of manuscripts" , "Score" .)