Possible Clues:

• Opposite of 104-Across
• Who has finished a 100-meter dash in under nine seconds
• What's left of energy after twelve, and who's got any?
• "Said ___ ever!"
• Who 'can get in the way of what I feel for you,' in a 2007 #1 Alicia Keys hit
• Not a soul has energy after midday
• Worst possible attendance
• Ghost town population
• 0% of the population
• Who is over a dictator?