Unexpected outcomes (6)
I believe the answer is:
upsets
'unexpected outcomes' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for upsets that I've seen before include "Capsizes or disturbs" , "Disapppointments" , "Hassles" , "Unexpected results" , "Disturbs or overturns (6)" .)