For team, colleague entering play horribly roughly (13)
I believe the answer is:
approximately
'roughly' is the definition.
('approximately' can be a synonym of 'roughly')
'for team colleague entering play horribly' is the wordplay.
'for' becomes 'pro' (I've seen this before**).
'team' becomes 'xi' (eleven, a football team).
'colleague' becomes 'mate'.
'entering' means one lot of letters goes inside another.
'horribly' indicates anagramming the letters.
'pro'+'xi'+'mate'='proximate'
'play' is an anagram of 'aply'.
'proximate' inserted inside 'aply' is 'APPROXIMATELY'.
(Other definitions for approximately that I've seen before include "Around, thereabouts" , "Circa" , "More or less" , "Roughly" .)