City came first, securing last of five goals ultimately (5)
I believe the answer is:
leeds
'city' is the definition.
(Leeds is an example)
'came first securing last of five goals ultimately' is the wordplay.
'came first' becomes 'led' (I've seen this before).
'securing' is an insertion indicator.
'last of' says to take the final letters.
'ultimately' suggests the final letters.
The last letter of 'five' is 'e'.
The final letter of 'goals' is 's'.
'led' enclosing 'e' is 'leed'.
'leed'+'s'='LEEDS'
(Other definitions for leeds that I've seen before include "English city" , "West Yorkshire city" , "Northern town" , "Soccer team" , "22 [FA CUP] runners-up" .)