J♠T♠ BTN vs BB, turn on Q♠ 9♦ 4♣ 2♠, 60 bb

Best play: Raise

Why

The 2♠ turn brings a flush draw and is otherwise a blank that keeps the BB's range capped after a passive line. Your J♠T♠ now holds an open-ended straight draw (any 8 or K completes Q‑J‑T‑9 plus the 8 fills 8‑9‑T‑J‑Q) together with a spade flush draw off Q♠2♠ — a huge combo draw with ~15 live outs, well above raw equity. Raising is the textbook turn semi-bluff: max fold equity against a capped range plus a strong backup draw when called, so you apply pressure now instead of passively floating.

Key idea

A big combo draw on a blanked-but-flushing turn is a raise, not a passive call — equity plus fold equity beats just realizing.

Common mistake

Just calling with the 15-out combo draw — it forfeits all fold equity against a capped range and leaves money on the table.