While it's impossible to prove a negative that none of them could, look at the progression of just modern 100 meter times http://upload.wikimedia.org/wikipedia/commons/thumb/6/62/World_record_progression_100m_men.svg/400px-World_record_progression_100m_men.svg.png . The winner from the first modern Olympics wouldn't even qualify today... Modern Olympians have modern science, medicine and nutrition on their side.