Not yet, but I view very few pitchers as an ace. Scherzer, Grienke, DeGrom, Syndergaard, Verlander, Kershaw, Sale, and Kluber when he was healthy. Everyone else is a number 1, but not an ace. There is a difference in my mind. An ace is going to have their best stuff every time out there, while a number one is going to have nights where they are fighting themselves (see JO tonight). JO could become an ace, but I think that is probably a dream at this point.