Straight Flush
In poker, a Straight Flush combines two powerful hands — a straight (five sequential cards) and a flush (five cards of the same suit). Together they form five consecutive cards all of the same suit. It ranks 2nd in the poker hand hierarchy, beaten only by the Royal Flush.
Meet the Straight Flush
A straight is five cards in sequence (e.g., 5, 6, 7, 8, 9) regardless of suit. A flush is five cards of the same suit regardless of rank. A Straight Flush satisfies both conditions simultaneously.
The Royal Flush
The highest possible Straight Flush is the Royal Flush: 10, Jack, Queen, King, and Ace all of the same suit. The only hand that beats a Straight Flush is the Royal Flush.
Straight Flush ranks 2nd in both Texas Hold'em and Omaha. The only hand that can beat it is the Royal Flush.
Ranks at Showdown
When two players both hold a Straight Flush, the highest card in the sequence determines the winner. A 5-to-9 Straight Flush outranks a 2-to-6 Straight Flush. If both sequences start with the same card, the pot is split.
Lowest Straight Flush
A-2-3-4-5 is the lowest Straight Flush (a 5-high straight using the Ace as a low card).
Straight Flush Combinations
Straight Flush combinations go all the way down to A-2-3-4-5 (the "Wheel" or "Bicycle"). Suits do not affect the ranking of a plain Straight, but they determine whether a hand is a Straight Flush.
Texas Hold'em Combinations
Total straight flush combinations in Texas Hold'em: 40 (4 suits × 10 sequences, including Royal Flush).
Omaha Combinations
Total straight flush combinations in Omaha: 36 (4 Royal Flushes + 32 non-Royal Straight Flushes, as Omaha allows 8 non-Royal sequences per suit).
Probabilities of Making a Straight Flush
Texas Hold'em
- Pre-flop: 0.39% (excluding Royal Flush)
- Flop: 1.30% (holding two connected cards J-10 through 5-4)
- Turn: 16.90% (open-ended straight-flush draw on flop)
- River: 17.20% (open-ended straight-flush draw)
Omaha Poker
- Pre-flop: 0.39%
- Flop: 4.90% (holding four consecutive ranks)
- Turn/River: varies from ~17.78% (8 outs) to ~44.44% (20 outs) depending on draw type
Conclusion
The Straight Flush is one of poker's most desirable hands. While rare, understanding its probabilities and relative strength helps you make confident decisions when you hold or draw to one.
Straight Flush Poker FAQ
Straights are generally strong in Hold'em. Their strength depends on board texture. With no flush or higher straight possible and no pair on the board, a straight is likely the best hand.
The strongest straight is Broadway (T-J-Q-K-A).
No. A flush ranks higher and beats a straight.
A wrap-around straight is one where the Ace appears in the middle of the sequence (e.g., Q-K-A-2-3). Note: most standard poker rules do not allow wrap-around straights.
No. A straight flush ranks above a full house.
In standard poker rules, JQKA2 is not a valid straight because straights cannot wrap around.
Yes. A-2-3-4-5 is the lowest straight, known as the wheel.
Yes. A straight flush beats four of a kind.
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