Kandie has amazing PBs in the 10K and the half marathon but the marathon is a lot different to both of those events. If Kandie paced Berlin or London up to 25k, or even just straight up ran a marathon before NYC (not advisable, but if he did) then I wouldn't doubt him so much. He's got one of the biggest names in the field so I don't blame anyone for thinking he's gonna steal the victory, but how many times have debutants won a marathon major in the past decade?
Obviously, I could be entirely wrong and a plethora of people could have done this, but it's just strange to me.