There is no way he's going to win this. They are going to keep having him playing defense ... they are going after his wallet, his foundation, his reputation and all the ammunition he gave them along the campaign trail with all of his bombastic comments; and he's not going to have time to prepare for the next debate even if he wanted to.
Had he gone after Clinton during the primaries as he should have, this would have all been behind him. Now, she can make all his indiscretions the focus. He has no ammunition against her; she doesn't have to defend anything; all her laundry was hung out to dry a long time ago and is old news.