Ranked for a tournament (6)
I believe the answer is:
seeded
'ranked for a tournament' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for seeded that I've seen before include "In tennis tournament, graded in first sixteen" , "Planted like top tennis player" , "set for growth" , "Among the favourites" , "Sown" .)