Under pressure, reportedly played for occasion (6)
I believe the answer is:
prompt
'for occasion' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for prompt that I've seen before include "Arriving on time" , "With little or no delay" , "Spurs do this" , "Immediate - supply actor's lines" , "Immediate - remind of lines" .)