Comprehend inclination to bag runs (5)
I believe the answer is:
learn
'comprehend' is the definition.
(comprehend can mean to learn or understand)
'inclination to bag runs' is the wordplay.
'inclination' becomes 'lean' (synonyms).
'to bag' is an insertion indicator.
'runs' becomes 'r' (cricket abbreviation).
'lean' going around 'r' is 'LEARN'.
(Other definitions for learn that I've seen before include "Commit to memory" , "Discover - study" , "Acquire 28 across" , "be taught a lesson" , "Be educated" .)