A backdoor straight is a straight draw that requires both the turn and river cards to complete a five-card straight. Unlike a regular straight draw that needs just one card, a backdoor straight needs two specific cards to materialize, making it a long-shot draw that poker players often overlook.
In poker, backdoor draws represent hidden equity that can turn weak holdings into winning hands. A backdoor straight occurs when you have three cards to a straight on the flop and need both remaining community cards to fill in the gaps. While these draws only complete about 4% of the time, they add valuable equity to hands that might otherwise be marginal. Professional players factor in backdoor potential when making decisions, especially in position where they can control the action across multiple streets.
What Happens with a Backdoor Straight?
A backdoor straight develops over multiple streets. On the flop, you have three cards that could potentially make a straight with perfect turn and river cards. You’re not drawing to a straight yet, you’re drawing to a draw.
For example, if you hold A♠K♣ and the flop comes Q♥7♦3♠, you have a backdoor straight draw. You need a jack on the turn (giving you a gutshot) and then a ten on the river to complete your straight. Or you could catch a ten on the turn and a jack on the river. Either way, you need both cards to make your hand.
The key characteristic of backdoor straights is that they’re not yet actual draws on the flop. They become real draws only after the turn card arrives and creates either a gutshot or open-ended straight draw.
Backdoor Straight vs Regular Straight Draw
A regular straight draw on the flop (gutshot or open-ender) needs just one card to complete. A backdoor straight needs two specific cards. If you have 7♠6♠ on a 8♦5♣2♥ flop, you have an open-ended straight draw, any 9 or 4 completes your straight. But if you have 7♠6♠ on a 8♦3♣2♥ flop, you have a backdoor straight draw, you need both a 5 and a 4 (or 5 and 9) to make a straight.
