Umpire about to request silence as Alcaraz and Djokovic finish last snack (11)
I believe the answer is:
refreshment
'snack' is the definition.
(refreshment is a kind of snack)
'umpire about to request silence as alcaraz and djokovic finish last' is the wordplay.
I cannot really understand how this works, but
'umpire' could be 'ref' (short for referee) and 'ref' is found in the answer.
'about' could be 're' ('re' means regarding or about) and 're' is found within the answer.
'silence' could be 'sh' ('sh' is said to tell someone to be silent) and 'sh' is located in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is found in the answer.
'last' could be 't' (I've seen this in other clues) and 't' is located in the answer.
The remaining letters 'me' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for refreshment that I've seen before include "Food or drink" , "something to take down?" , "stimulation" , "Light snack or drink" , "Renewal, reinvigoration" .)