Conceal part of innings in tournament (5,2)
I believe the answer is:
cover up
'conceal' is the definition.
(covering up is a kind of concealing)
'innings in tournament' is the wordplay.
'innings' becomes 'over' (I am not sure about this - if you are sure you should believe this answer much more).
'in' indicates putting letters inside.
'tournament' becomes 'cup' (eg the World Cup).
'over' going inside 'cup' is 'COVER-UP'.
'part of' is the link.
Can you help me to learn more?
(Other definitions for cover up that I've seen before include "Conceal" , "Attempt at concealment" , "Withhold information" , "cost of insurance has risen" , "whitewash" .)