American bowler in an English county side (5)
I believe the answer is:
derby
'american bowler' is the definition.
(I've seen this before)
'an english county side' is the wordplay.
'an english county' becomes 'der' (I am not sure about this - if you are sure you should believe this answer much more).
'side' becomes 'by' (synonyms).
'der'+'by'='DERBY'
'in' is the link.
Can you help me to learn more?
(Other definitions for derby that I've seen before include "Gracefully thin" , "Annual race at Epsom" , "Local game" , "Hat, race and local match" , "confrontation between neighbours" .)