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Two-Tone Flop: What a Second Card of the Same Suit Changes

On a two-tone flop such as Q♠ 9♠ 8♣, any two spades hold a 9-out flush draw. Against A♥A♦, A♠5♠ goes from 2.7% on the rainbow Q♣ 9♦ 8♥ to 37.7%, and 4♠3♠ from 2.3% to 37.0%. Hands that already combine a straight draw and a flush draw climb highest: T♠7♠ reaches 55.8%. Against A♥A♦, which holds no spade, the straight J♥T♥ and the set 9♣9♥ do not care about the suits.

Aces on Q♠ 9♠ 8♣

In the cutoff with A♥A♦, you opened to 2.5 big blinds and the big blind called. The flop is Q♠ 9♠ 8♣ and the big blind checks. Check back, bet 33%, bet 60% or overbet 130%?

See the answer

Equity of A♥A♦ on this flop, next to the same hands on a rainbow Q♣ 9♦ 8♥:

Big blind's handQ♠ 9♠ 8♣Q♣ 9♦ 8♥
K♠K♣, smaller overpair85.7%90.0%
Q♦J♦, top pair and a gutshot67.1%64.2%
A♠5♠, nut flush draw62.3%97.3%
K♠J♠, flush draw and a gutshot53.1%81.3%
T♠7♠, flush draw and open-ended straight draw44.2%66.4%
9♣9♥, set9.7%9.7%

The aces are still ahead of every draw except T♠7♠, but each draw has a real share of the pot. A bet charges the draws while the aces are furthest ahead.

What the second spade adds to each draw

Equity against A♥A♦, with the turn and river to come:

HandQ♠ 9♠ 8♣OutsQ♣ 9♦ 8♥Outs
A♠5♠37.7%92.7%0
4♠3♠37.0%92.3%0
K♠J♠46.9%1218.7%4
T♠7♠55.8%1533.6%8
J♥T♥, made straight96.7%—96.7%—
9♣9♥, set90.3%—90.3%—

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Sources

Frequently asked questions

What is a two-tone flop?

A flop with two cards of the same suit, such as Q♠ 9♠ 8♣. Every hand holding two cards of that suit has a 9-out flush draw.

How much does a flush draw add on a two-tone flop?

A lot for hands that had nothing: A♠5♠ has 2.7% against A♥A♦ on a rainbow Q♣ 9♦ 8♥, and 37.7% on Q♠ 9♠ 8♣.

Does a two-tone flop change anything for a made straight or a set?

Not against a hand without that suit: J♥T♥ (a straight) and 9♣9♥ (a set) keep the same equity against A♥A♦ on both boards, 96.7% and 90.3%. Against a flush draw, they do lose equity.

How we made this page

The spots come from our library of 647 puzzles. Their expected answers follow rules we wrote and explain on each puzzle; they are not solver outputs. 34 figures on this page are recomputed from the cards by our automated tests. Written with the help of AI tools, then reviewed and checked by our team.

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