Experts (4)
'experts' is the definition.
(professionals)
This is all the clue.
(Other definitions for pros that I've seen before include "Persons with knowledge and skill" , "Arguments in favour" , "Sportsmen who are paid" , "Yes votes" , "Opposites of cons" .)
'experts' is the definition.
(ace is a kind of expert)
This is the entire clue.
(Other definitions for aces that I've seen before include "Champions" , "Top cards or people" , "Honours" , "passes with flying colours in US" , "holes in one" .)
(Another definition for pundits that I've seen is " Authorities on particular subjects".)