Match fixing meant to secure Ashes trophy (10)
I believe the answer is:
tournament
'match' is the definition.
(thesaurus)
'fixing meant to secure ashes trophy' is the wordplay.
'fixing' is an anagram indicator.
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'secure ashes' becomes 'to' (I can't explain this - if you can you should give a lot more credence to this answer).
'trophy' becomes 'urn'.
'meant' anagrammed gives 'ament'.
'to'+'urn'='tourn'
'ament' put after 'tourn' is 'TOURNAMENT'.
Can you help me to learn more?
(Other definitions for tournament that I've seen before include "Sports contest" , "series of games" , "Jousting competition" , "Medieval jousting event" , "Jousting contest" .)