9♣8♣ BB vs BTN, turn on T♠ 7♠ 2♣ 4♦, 60 bb

Best play: Check

Why

The 4d is a brick on Ts7s2c 4d, leaving you with an open-ended straight draw (9c8c needs a jack or six) and no made hand as the OOP BB. With nothing to value-bet and a draw that realizes best by seeing the river cheaply, checking to the BTN is standard; raising as a pure bluff bloats the pot with a hand that prefers to keep the BTN's bluffs in. In heads-up the BTN still barrels wide here, so check-calling or check-folding the river keeps your overall draw-heavy checking range balanced.

Key idea

A bare OESD with no pair from the OOP BB usually wants to check and realize equity passively rather than raise into the BTN's wide, uncapped turn betting range.

Common mistake

Turning the open-ender into an aggressive check‑raise bluff, which folds out the BTN's air you actually beat by river and overcommits a no-pair hand.