Injury resulting from run in country . . . (6)
I believe the answer is:
sprain
'injury' is the definition.
(I know that sprain is a type of pull)
'run in country' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'in' means one lot of letters goes inside another.
'country' becomes 'Spain' (Spain is an example).
'r' put within 'spain' is 'SPRAIN'.
'resulting from' is the link.
(Other definitions for sprain that I've seen before include "Wrenching (of a muscle)" , "Rick" , "Injury to ligaments" , "Strain (eg, ankle)" , "Wrench; in rasp (anag.)" .)