Hero on overseas trip books event for players (10)
I believe the answer is:
tournament
'event for players' is the definition.
(event where people play to win)
'hero on overseas trip books' is the wordplay.
'hero' becomes 'name' (both can mean a famous or celebrated person).
'on' is a charade indicator (letters next to each other).
'overseas trip' becomes 'tour' (eg a tour of Europe).
'books' becomes 'NT' (abbreviation for New Testament).
'name' after 'tour' is 'tourname'.
'tourname'+'nt'='TOURNAMENT'
(Other definitions for tournament that I've seen before include "Jousting contest" , "meeting!" , "open perhaps" , "Series of events" , "series of games" .)