Sportsman with a glove, pants and cap (9)
I believe the answer is:
shortstop
'sportsman' is the definition.
(thesaurus)
'pants and cap' is the wordplay.
'pants' becomes 'shorts' (shorts is a kind of pants).
'and' says to put letters next to each other.
'cap' becomes 'top' (synonyms).
'shorts'+'top'='SHORTSTOP'
'with a glove' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for shortstop that I've seen before include "US player" , "Baseball player" , "position in American sport" , "Opening move" , "Fielding position (baseball)" .)