Wide-ranging, strove to secure a run (6)
I believe the answer is:
varied
'wide-ranging' is the definition.
(I've seen this before)
'strove to secure a run' is the wordplay.
'strove' becomes 'vied' (I've seen this in another clue).
'to secure' means one lot of letters goes inside another (inserted letters are secured inside).
'run' becomes 'r' (cricket abbreviation).
'a'+'r'='ar'
'vied' enclosing 'ar' is 'VARIED'.
(Other definitions for varied that I've seen before include "Miscellaneous" , "Differing" , "Of different kinds" , "(Of selection) showing a number of types" , "Wide-ranging" .)