[stillnaive]

UTG limp is kinda weak with a one gapper, and it shows as SB takes over the hand and completely dominates from that point on. UTG, I'm folding J9s against any kind of a LAG opponent behind me, but that's just me.

On the flop, I'm also giving that up considering the SB is a PFR and made an overbet to the pot. You're not getting the odds to continue, and realistically, you have no indication that SB is going to stack off if a third diamond hits; he could slow down and just kill your profit on the hand.

I think SB's line implies TPGK at the least, if not trips. You're a big dog there with 9 outs and you're not getting the odds to chase it. Fold.