Inside Straight

An inside straight is a straight draw that needs one specific missing rank in the middle of the sequence. It is also called a gutshot. In most standard one-card draw situations, four cards of the missing rank can complete the straight.

The draw looks close because four ranks are already present. However, it is usually weaker than an open-ended or outside straight draw, which can complete at either end.

Plain Talk

Suppose you hold:

5-6-8-9

Only a 7 completes the straight. The missing rank sits inside the sequence, so this is an inside straight draw.

Now compare:

5-6-7-8

A 4 or 9 completes the straight. That is an outside straight or open-ended straight draw.

The difference is the number of completing cards, often called outs.

The open-ended draw is approximately twice as likely to complete on one card.

Common Inside-Straight Examples

The ace creates special cases because it can normally be low in A-2-3-4-5 or high in 10-J-Q-K-A, but not wrap around. Q-K-A-2-3 is not a standard straight.

Inside Straight in Video Poker

In Video Poker, the player receives five cards and chooses which to hold. If four cards are held, one replacement card is drawn from the remaining 47 cards.

For a clean inside straight with four available outs:

Probability of completing = 4 ÷ 47 = 8.51%

That means the draw misses about 91.49% of the time.

A player can still be correct to hold an inside straight in some situations. The decision depends on:

• The exact game
• The paytable
• Whether the hand contains high cards
• Whether a pair is present
• Suit relationships
• Wild cards
• Bonus-hand premiums
• Penalty cards
• The value of alternative holds

A Strategy Chart ranks these choices by expected value. “Four to a straight” is not one universal strategy category.

One-Card Probability Example

Assume a Jacks or Better-style game and a four-card inside straight with no competing high pair or stronger draw.

There are 47 unseen cards:

• 4 complete the straight
• 43 do not

The raw hit probability is:

4/47 = 0.0851 = 8.51%

If a straight pays 4 for 1, the simple probability of hitting does not by itself prove the hold is correct. The final hand distribution also includes pairs, high pairs, trips, flushes in suited cases, and other outcomes depending on the cards discarded.

That is why optimal video poker decisions use full expected value rather than one visible target.

Inside Straight in Texas Hold’em

In community-card poker, a gutshot often means four outs with one or two cards still to come.

From flop to turn

With 47 unseen cards and four outs:

4/47 = 8.51%

From flop to river

The chance of missing both remaining cards is:

43/47 × 42/46 = 83.53%

Therefore, the chance of hitting by the river is:

1 - 0.8353 = 16.47%

This assumes all four outs are live and that completing the straight produces a winning hand. In real poker, an out can be dirty if it also completes a flush, gives an opponent a higher straight, pairs the board in a dangerous way, or creates a split pot.

The mathematical chance of completing is not always the same as the chance of winning.

Pot Odds and Calling Decisions

In poker, players compare the cost of calling with the potential reward.

Suppose the pot is $100 and an opponent bets $20. If you call $20, the final pot before future action becomes $140.

The immediate price is:

$20 call ÷ $140 total pot = 14.29%

A four-out gutshot has only an 8.51% chance to hit on the next card. Ignoring future betting, implied odds, fold equity, and card quality, the immediate call is not justified by the draw alone.

If two cards are guaranteed to come for one payment, the 16.47% by-river probability can change the comparison. In normal betting, however, the turn may create another decision and another cost.

Inside Straight Versus Double Gutshot

A double gutshot has two different inside ranks that can complete a straight. It may look like an inside draw, but it often has eight outs—similar to an open-ended draw.

Example:

4-6-7-8-10 across hole and community cards can be completed by a 5 or 9, depending on the exact poker format and best-five-card construction.

The label matters less than counting the actual live outs.

Inside Straight Versus Broken Straight

Players sometimes call any four cards near each other a straight draw. That is too broad.

A visual pattern is not enough. List the ranks that actually produce five consecutive cards.

Strategy-Chart Priority

Video poker charts place holds in descending expected value. A simplified order might prefer:

1. Made premium hands
2. Four to a royal flush
3. High pairs
4. Four to a straight flush
5. Lower made hands
6. Strong flush or straight draws
7. Selected high-card combinations
8. Selected inside straights

The exact order changes by game and paytable.

A low inside straight with no high cards can be playable in some full-pay games. An inside straight with high cards may be inferior to keeping fewer cards that preserve royal-flush possibilities or high-pair value.

Never transfer a chart from one game to another without checking the paytable.

Penalty Cards

A penalty card is a discarded card that removes a possible future improvement from a hold.

Suppose two candidate holds appear nearly equal. One discarded card may block a straight, flush, or high-pair outcome. Advanced strategy can change because of that card.

For casual players, the practical lesson is not to memorize every penalty-card exception immediately. First use the correct game-specific chart. Then study exceptions only if the added accuracy matters to your play.

Wild-Card Games

In Deuces Wild and other wild-card video poker games, inside-straight decisions change sharply.

A wild card can:

• Complete the missing rank
• Create several possible straights
• Increase the value of straight flushes
• Change hand-ranking priorities
• Make a natural straight less valuable than a wild premium draw

The ordinary 4/47 calculation may no longer describe the decision because wild cards create additional successful outcomes.

A standard Jacks or Better chart should never be used for a wild-card game.

The Visual Trap

Inside straights are overvalued because they look nearly complete. Four ranks form a recognizable line with one gap. The brain sees “one card away” and overlooks how many cards fail.

In a one-card video poker draw:

• 4 cards complete the straight
• 43 cards do not

The hand is one rank away, but it is also a 91.49% miss on the straight target.

This is similar to near-miss effects in other casino games. Visual closeness is not probability.

From the Casino Side

In video poker, the published theoretical return normally assumes a specified strategy, often near-optimal or optimal play. Real players may return less because they:

• Hold weak inside straights too often
• Break high pairs incorrectly
• Ignore paytable differences
• Use the wrong chart
• Chase visually attractive draws
• Play too fast to evaluate alternatives

The casino does not need to alter the cards to benefit from strategy errors. The approved game math and player decisions create the difference between theoretical and actual return.

At a poker room, the house usually earns through rake or time charges rather than directly opposing the draw. However, accurate dealer procedure still matters for card counts, exposed cards, betting order, and pot settlement.

The Poker TDA rules provide widely used tournament procedure guidance, while game-specific video poker analysis such as the Wizard of Odds Jacks or Better strategy demonstrates why exact card combinations matter.

Common Misunderstandings

“Four to a straight always has eight outs”

No. An inside straight normally has four completing cards. An outside straight normally has eight.

“One missing card means a 20% chance”

No. In a one-card draw from 47 unseen cards, four outs equal 8.51%.

“If I hit the straight, I always win the poker hand”

No. An opponent can hold a higher straight, flush, full house, or other stronger hand.

“Every inside straight is a bad video poker hold”

No. Some are correct according to the game-specific chart. They are simply weaker than players often assume.

“A double gutshot is only four outs”

It can have eight outs because two different ranks complete a straight.

“The rule of four and two is exact”

It is a shortcut. Exact probabilities are 8.51% for one card and 16.47% for two cards with four clean outs.

A Practical Decision Process

When evaluating an inside straight:

1. Identify the exact missing rank.
2. Count all live cards of that rank.
3. Check whether any out is dirty.
4. Compare inside and outside alternatives.
5. In video poker, use the exact paytable’s strategy chart.
6. In poker, compare the call price with the chance of winning, not merely completing.
7. Consider stronger made hands, pairs, flush draws, and premium-card holds.
8. Do not chase because the hand looks close.

Hard Truth

An inside straight is visually one card away, but in a one-card draw it usually misses more than nine times out of ten.

FAQ

Why is it called an inside straight?

Because the missing rank lies inside the sequence rather than at an open end.

Is an inside straight the same as a gutshot?

Yes. Gutshot is the common poker term.

How many outs does an inside straight have?

Usually four, assuming all four cards of the missing rank are unseen and live.

What is the one-card chance of hitting?

With 47 unseen cards, 4/47 equals 8.51%.

What is the chance from flop to river?

With four clean outs and two cards to come, the exact chance is about 16.47%.

Is an outside straight twice as good?

Its raw one-card completion chance is approximately twice as high, but strategic value also depends on payouts, opponents, suits, and competing hands.

Should I hold an inside straight in video poker?

Only when the correct strategy chart for that game and paytable ranks it above the alternatives.

Formula Summary

Related Reading

Continue with Outside Straight, Straight, Strategy Chart, Draw Poker, Video Poker, Royal Draw, Pat Hand, and Expected Value.