Possible Clues:

• Spotted cat, the swiftest mammal
• Feline — fastest land animal
• Announced as fraudster, he runs — there's none faster
• Swift big cat
• African sprinter
• That sounds not fair but feline
• What sounds like fraud which is spotted in Africa
• The ache that's tormented a noted sprinter
• Beast sounds like Madoff
• Brilliant sprinter is a fraud, they say