In this situation, the player has four cards in sequence but is missing one card in the middle to complete the hand. For example, if a player holds 4, 5, 7, and 8, they would need a 6 to complete a straight. This type of draw is considered more challenging to hit compared to an open-ended straight draw, as only four cards in the deck can complete the straight.
Inside Straight Draw Example
For example, a player has 6♣, 7♦, 9♠, and 10♥. They need an 8 from the deck to complete their straight.