Possible Clues:

• Someone who fails consistently
• Has-been Labour leader's rose wilting
• No W in this for one
• No W in the one that has not one, by the sound of it
• The one with 0 in 7-0
• Not the winner
• Possibly a bad one
• One who is (always) unsuccessful
• Perennial last-place finisher
• For him comparatively easy to drop a round?