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In Seven Card Stud 4th street, I have Kings (K-K-7, caught a 9); my opponent paired their door card (5-5) and bets. Call, raise or fold?

Heads-up, PokerToast's limit Stud solver calls with Kings and 7-9 showing against an open pair of 5s 68% of the time, and raises 32%.

The spot

The solver's numbers

The solver's answer
PlayHow often (strategy)Worth from here on (EV estimate, small bets)
Call67.7%+1.73
Raise32.3%+1.68
Fold0.0%+0.00

Measured on 134 play-outs of this situation. The highlighted row is the play that measured best.

Why, in plain words

Call and raise are worth about the same here (0.05 small bets apart, within the measuring noise of about 0.78), so neither is a real mistake; mixing them keeps you hard to read.

What popular strategy articles say

A paired door card is a serious danger sign, a stop sign: fold one pair to the bet, because they may have trips. (Written about 5th street.)

What strategy articles found by web search said on 2026-10-08 (PokerNews, Card Player, PokerStrategy, pokerskill and similar; mostly written between about 2007 and 2015, and mostly for full-ring games with several players in the pot).

Heads-up, the solver disagrees: it practically never chooses the recommended play (fold); its main play is call (68%).

Measured value from here on: call +1.73 small bets, fold 0 (folding).

Heads-up vs multiway

The numbers above are for heads-up play (two players). Most published advice is written for full-ring games with several players in the pot, so part of any difference can come from that.

We also looked up a 3-handed version (the open 5s bet and a third player showing T-8 calls before you act) in PokerToast's 3-handed solver, but it has not measured that spot often enough, so this page makes no claim about multiway pots.

How these numbers were made

From PokerToast's own heads-up limit Stud solver, trained 9,747,144 iterations, exported 2026-10-06 15:25:55, 30,546 situations (version S-9747144-20261006152555). It learned by self-play (Monte Carlo counterfactual regret minimization) for limit betting, at most four bets a street.

Practice it

Part of: Seven Card Stud 4th and 5th street: a pair that does not improve

More Stud spots: Stud: a pair of 5s, you brought in with a 2, an Ace completes · Stud: rolled-up 8s on 3rd street. Slowplay or raise? · Stud: Kings in the hole, an Ace completes your bring-in · Stud: a split pair of 4s with a 9 kicker against a deuce bring-in. Complete, call or fold? · Stud: a three-flush with a King (K-9-4 of hearts) against a deuce bring-in. Complete or call? · Stud: a three-straight (9-10-J) against a deuce bring-in. Complete or call? · Stud: a pair of Tens, you brought in with a 9, an Ace completes · Stud: Aces in the hole, a King completes your bring-in. Call or re-raise? · Stud 5th street: unimproved Aces against 6-8-4 showing. Bet or check? · Stud: split Queens against a deuce bring-in. Complete? · Stud 4th street: Jacks against an Ace that catches a 5 and bets · Stud: brought in with K-Q-2, an 8 completes. Fold? · Stud: Kings in the hole, an 8 completes your bring-in. Call or re-raise? · Stud 4th street: unimproved Queens against 5-8 showing. Bet or check?