It's sketched when tied (5)
I believe the answer is:
drawn
This clue is a double definition.
'it's sketched' is the first definition.
(I've seen this before)
'tied' is the second definition.
(tie can mean to be drawn in sport)
'when' is the link.
(Other definitions for drawn that I've seen before include "Attracted - depicted" , "Sketched or tied" , "Depicted (as being lined?)" , "Portrayed" , "Depicted - haggard" .)