13 down
Champion
outside
left,
pretty
grim
(5)
Champion outside left, pretty grim (5)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
The definition is pretty grim, since black can mean bleak or dire. For the wordplay, take BACK (to champion or support someone) and wrap it "outside" L (left), slotting the L in to give you B-L-ACK.