Sticks around striker, showing guts (12)
I believe the answer is:
chitterlings
'guts' is the definition.
(I've seen this before)
'sticks around striker showing' is the wordplay.
'sticks' becomes 'clings' ('cling' can be a synonym of 'stick').
'around' indicates putting letters inside.
'striker showing' becomes 'hitter' (I can't explain this - if you can you should give a lot more credence to this answer).
'clings' enclosing 'hitter' is 'CHITTERLINGS'.
Can you help me to learn more?
(Other definitions for chitterlings that I've seen before include "The smaller intestines of a pig, cooked as food" , "guts" .)