Seven Card Stud Door Card Analysis

In stud games (7 Card Stud, 7 Card Stud High/Low 8, Razz, and 5 Card Stud) starting hand ranges can be analyzed based on the starting door card. The door card is the first up card and is represented by the card field next to the range percent text fields. When range mode is chosen for a stud hand, there are two possibilities: leave the door card blank or specify a door card.

When the door card is blank, the starting hand is considered to be a random starting hand in the specified percent range. In 5 Card Stud, this is a 2-card starting hand, and in the other stud games, this is a 3-card starting hand.

For example, 7♠7♥A♦ has an approximate 52.91 equity (out of 100) versus one opponent who holds a starting hand in the top 30% of hands.

range without door card

When a door card is specified, the starting hand is considered to be a random starting hand in the specified percent range, but further limited to those hands that contain that door card. For example, 7♠7♥A♦ has a 50.48 equity versus one opponent who holds a starting hand in the top 30% of hands with a J♣ door card.

range with door card

More cards can be added to see how well they match the door card and range. Say the 7♠7♥A♦ catches a 6♣. If the opponent catches an 3♥ to go along with the J♣, then the sevens have a 52.98 equity, but if the opponent catches a T♣ to go with the J♣, then the sevens would only have a 38.13 equity—a difference of 14.85!

4th street with range