He has 8 WAR over his last 317 innings, or about 5 WAR per 200 IP. That's an ace, and his peripherals back it up. Elite velo, elite whiffs, elite Ks, elite command, and above average GB tendencies. I was late to jump on the Carrasco train, but you can't look at what he's done over the last two seasons and deny that he has performed at the talent level of an ace.