As you'll see below, I'm not actually UTG: I'm BB.

SB is an interesting player as a villain: I've got more than 200 hands on them and their stats suggest that they're on the tighter side of TAGgy (24/18, 3% 3bet) but during this session I noted a couple of things that put them significantly outside of optimal or textbook-TAG play, imo: I saw them 4betting what was probably too wide a range preflop and I also decided they were showing too little attention to bet sizing (potting too often, basically).

Villain's SB RFI is 25% in a small sample (8). I thought about 3betting, but given how active villain had been with 4bets and how this isn't that great of a combo... I just called.

Another street where I was tempted to raise. However, I decided that if I strengthened villain's range that I really wasn't going to be in very good shape as often as I'd like, so I just called.

When villain checks here, I take the 4s to be a bit of a blank for them. And even though it's a blank for them, I really only pot the turn on actual blank cards that don't create new draws (or at least don't create as many new draws as this one: spade draw is new and there are new straight draws too). Either way, I decide to bet because I'm looking pretty good all-around: made second nuts, nut GS (with non-nut SD to J; perhaps worth something), and a middling flush draw.

When villain raises... I think in retrospect I should maybe just GII here. I think multiple tables and a short time bank on this particular table made me a little conservative and hasty to just call.

I may be fabricating this after the fact, but I feel like I wanted to be able to let villain bet the river for me or keep my range more ambiguous should they check the river to me.

Because I feel like this is a pretty unlikely JJ line, so I'm not super likely to be value-cutting myself, right? (I haven't checked the math on how much equity a combo draw could have against me here, though. Seems likely I'm at least ahead of all non-JJ, if not way ahead. But then am I getting too many folds on the turn by 3betting compared to getting another bet on the river? Hard to say.)

Well, villain bets river (putting me all in). Trouble is, my hand is looking very non-nutty all of a sudden. I lose to a decent number of straights, but I also have the 7 to block some of them somewhat.