Re: Cleaning up outs, or destroying implied odds?
 

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3bet preflop

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I also like a flop raise given your line.

Re: Cleaning up outs, or destroying implied odds?
 

Neither. It's a value raise. You are favorite against a 9 or any pocket pair except AA-QQ which SB will almost never have here. Getting MP to fold a possible AK is nice, but his pre-flop raising range is likely to be very wide and AK is just one possibility. More likely have you have dominated, which is why you need to be 3-betting this pre-flop most of the time.