Possible Clues:

• "Sure thing!"
• True statement to a gambler certainly
• "I'll say!"
• Surely what solvers do when going to the dogs
• Year at Oxford University attracts Yankee for sure
• Expression of emphatic agreement
• 'Count on it!'
• 'Sure'
• Certainly! It's what you do at the Curragh
• What one does with a bookmaker, of course