Presumably pro now second in finals? (5)
I believe the answer is:
exams
'finals?' is the definition.
(final is a kind of exam)
'presumably pro now second' is the wordplay.
I cannot quite see how this works, but
'second' could be 's' (common abbreviation) and 's' is found in the answer.
The remaining letters 'exam' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for exams that I've seen before include "GCSE, A-level, etc" , "Set of exercises evaluating knowledge (abbr)" , "finals?" , "Student assessments" , "summer term commitment?" .)