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His VPIP is 52, so it's certainly within the realm of possibility.

Also, why would you move in when you have position? If you're going to play, shouldn't you call so he can continue the charade if he doesn't have a 9?

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You dont have Pos against MP, as you can see your first to act on the turn. The reason i say move in here is becuase you have a 374 stack that is roughly down to 230 after the pf,flop,turn bet action. If you call 80 more that leaves you with 153 and that leaves more then have the stack in the pot any ways. You have little folding equity anyway so just shove the rest in.