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Gotta raise, even if it may be what the BB wants you to do. The guys behind you, if they have some combination of pair + gutshot outs (like 9-J), you want them out.

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This statement is right, even though you could easily be trailing here, you must raise to protect your vulnerable hand the times you are good. By the way, if the pro 3 bets your raise you should fold since you are probably drawing close to dead. Also, after your turn raise, assuming you dont get 3 bet, you should be checking the river unimproved.