K♦Q♦ BB vs BTN, turn on T♠ 7♣ 2♣ 9♦, 70 bb

Best play: Call

Why

The 9♦ turn on T♠7♣2♣ adds connectivity and a backdoor diamond draw but leaves you with no pair — K♦Q♦ is two overcards plus a gutshot, since a Jack completes Q‑J‑T‑9 for the straight. Out of position against the BTN's barrel you are not strong enough to check‑raise as a bluff into a board that hits his floats, but you have a clean draw plus six overcard outs and a backdoor flush, so check-call takes the right price to continue. Calling realizes your equity cheaply and lets you hit a Jack, King, or Queen on the river while keeping his bluffs in.

Key idea

Two overcards plus a gutshot out of position is a call, not a bluff-raise, when the turn improves the in-position bettor's floats.

Common mistake

Turning overcards-plus-gutshot into a check‑raise bluff into a connecting turn fires into too many of villain's continues.