This is a good poll for Kasich, but if he only barely wins Ohio after placing third in Michigan, where does he go from there? Pennsylvania? I really don't see any other plausible wins for him, never mind a path to the nomination.
You're right, no path to the nomination for him besides a contested convention. But is it possible for him to get *any* wins after Ohio? Sure, if Rubio drops out and frees up some more voters, and Trump and Cruz stay mostly focused on attacking each other, Kasich could potentially win some more states somewhere, though yeah, I don't know exactly which states. But I mean, there are plenty of states that don't vote until May or June, and that's a lot of time for things to change.