I'm upset over some Olympic events - errors in programme? (9)
I believe the answer is:
misprints
'errors in programme?' is the definition.
'misprints' can be an answer for 'errors' (misprint is a kind of error). I am not sure about the 'in programme?' bit.
'i'm upset over some olympic events' is the wordplay.
'upset over' says the letters should be written backwards (knocked over).
'some olympic events' becomes 'sprints' (I am not sure about this - if you are sure you should believe this answer much more).
'im' reversed gives 'mi'.
'mi'+'sprints'='MISPRINTS'
Can you help me to learn more?
(Another definition for misprints that I've seen is " Slips".)