Has Colin beaten this chap? (8)
I believe the answer is:
nicholas
'this chap?' is the definition.
(man's name)
'has colin beaten' is the wordplay.
'beaten' indicates an anagram (letters beaten up or destroyed).
'has'+'colin'='hascolin'
'hascolin' with letters rearranged gives 'NICHOLAS'.
(Other definitions for nicholas that I've seen before include "Boy" , "Former Russian leader" , "Russia's last emperor ..." , "Man's name; last tsar" , "Saint associated with Christmas figure" .)