A♠Q♠ SB vs BTN, turn on Q♣ 8♦ 4♠ 2♠, 95 bb

Best play: Check

Why

Turn, Q‑8‑4‑2 with two spades. Hero is out of position as SB and acts first into the BTN; this is a check, not a bet. Hero holds A‑Q for top pair top kicker plus the nut flush draw (A‑Q of spades with two spades down). Checking keeps the pot controlled with a strong-but-vulnerable hand, lets the in-position BTN barrel its worse pairs and air, and preserves a check‑raise. Hero is OOP here, never in position.

Key idea

Out of position on the turn, a strong made hand with a nut draw can check to keep the in-position player betting and to set up a check‑raise rather than bet into them.

Common mistake

Leading out and getting raised off equity, or assuming you are 'in position' as the SB; the SB acts first and must check or lead deliberately.