On the first hand of the tournament, I think this is a pretty easy call on the flop. This guy is an unknown who just cold called an EP raise then pushed the flop. So he has A) a monster, B) he's overplaying something like AQ or AJ, C) he is a maniac. I think the fact that this is the first hand makes it more likely that it is B or C, if that makes sense.

Preflop I think a reraise is OK, but it's not really for information or to find out where I am. It's b/c I think I have the best hand, for the same reasons as above. I mean are you folding if you reraise and UTG pushes?