This is from an observed hand from an elite pro vid.

6-max, 100bb effective. Both players are TAG-ish and not doing anything crazy.

Hand is folded to the blinds. SB opens for 3x big blinds, BB calls.

pot 6bb's
Flop: TA7r
SB bets 4.5bb's, BB calls.

pot 15bb's
Turn: TA7Tr
SB checks, BB bets 9bb's, SB calls.

For sake of discussion let's just say BB has QKJ9r and is taking a stab at the turn.

And let's assume SB isn't check/calling here to do something like bluff raise river or anything out of the ordinary. He has something whether it's a made hand/some kind of showdown value, or draw.

What type of hands do you expect a TAG SB to be check/calling here with, in this spot? Which hands do you think a competent opponent never really has by check/calling a paired turn?

I'm posting this because in the vid the pro says his hand is pretty face-up once he check/calls. So if a check/call range here is face-up, what's most commonly showing up in this range? Intuitively I think I see a lot of AK, AQ, AJ here, and some 89. I think most straightforward players will bet FH/trips here, and A7 has a lot of incentive to barrel a straight draw off the turned T here. But beyond that, my best guess is pretty fuzzy here.

Thoughts? Thanks!