Check the turn blind on a 9-8-7 flop.

[andyfox]

60-120 game. Folded to the buton, who raises. Small blind calls, big blind calls.

Flop comes 9-8-7 rainbow. Checked to the button, who bets; both blinds call. As the dealer is burning for the turn, small blind says, "I check" and taps the table.

What, if anything do we think this tells us about the small blind's hand, and does it make any difference how good, how aggressive, or how tricky he is?

Thanks.