Related Clues:

• Cook too little grub initially for such as David
• One has only the slightest chance of succeeding
• Big underdog (2 words)
• An attempt unlikely to be successful
• Junior to follow one expected to lose
• Risky option offered by barman perhaps
• Pines for something stolen locally and has no chance of success
• Competitor expected to lose
• One has little chance of succeeding
• Outsider grounded when misbehaving
• When one wins, it's an upset
• Swarthy Arab, perhaps an unknown quantity
• Probable failure subordinate to setter, perhaps?
• Unfancied person grounded, unfortunately
• Competitor about whose abilities little is known