Some sports editor returning, namely from Rome (2,3)
I believe the answer is:
id est
'namely from rome' is the definition.
I can't judge whether this defines the answer.
'some sports editor returning' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'returning' says the letters should be written backwards.
'tsedi' is hidden in the letters of 'sports editor'.
'tsedi' reversed gives 'ID EST'.
Can you help me to learn more?
(Other definitions for id est that I've seen before include "ie (L)" , "that is in Rome" , "Namely" , "Ie, in full" , "That is to say (Latin)" .)