Clown in RU team, second to be dismissed (9)
I believe the answer is:
harlequin
'clown' is the definition.
(I know that harlequin is a type of clown)
'ru team second to be dismissed' is the wordplay.
'ru team' becomes 'harlequins' (I've seen this before).
'second' becomes 's' (common abbreviation).
'to be dismissed' is a deletion indicator.
'harlequins' with 's' removed is 'HARLEQUIN'.
'in' acts as a link.
(Other definitions for harlequin that I've seen before include "Northern duck" , "London rugby player" , "Foppish lover of Columbine" , "Commedia dell'arte clown" , "Brightly-coloured - Columbine's partner in pantomime" .)