Cricketer less streamlined after a couple of starters for lunch (3-7)
I believe the answer is:
all-rounder
'cricketer' is the definition.
(I know that all-rounder is a type of cricketer)
'less streamlined after a couple of starters for lunch' is the wordplay.
'less streamlined' becomes 'rounder' (streamlined can mean straight as opposed to round).
'after' is a charade indicator (letters next to each other).
'couple of' indicates the doubling of some letters.
'starters for' says to take the initial letters.
The first letter of 'lunch' is 'l'.
'l' duplicated is 'll'.
'a'+'ll'='all'
'rounder' put after 'all' is 'ALL-ROUNDER'.
(Other definitions for all-rounder that I've seen before include "One skilled in many subjects" , "One with ability in many aspects of their trade" , "Versatile person" , "One good at several things" .)