KJ vs K2s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KJ (King-Jack) | 66.3% | 7.7% | 70.1% |
| K2s (King-Deuce Suited) | 26.0% | 7.7% | 29.9% |
Suited vs offsuit: KJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| KJs | 67.3% | 7.4% | 71.0% |
| KJo | 65.9% | 7.8% | 69.8% |
How KJ vs K2s unfolds by street
King-Jack (KJ) is still ahead on 83% of flops against K2s, and the lead survives to the turn on 78%. K2s takes the lead on the other 17% of flops. These figures come from full board enumeration, not a simulation.
| Street | KJ still ahead | K2s flipped the lead |
|---|---|---|
| Flop | 83% | 17% |
| Turn | 78% | 22% |
KJ vs K2s is textbook domination: the hands share a card, so K2s is fighting for barely three outs. KJ wins 66.3%, K2s wins 26.0%, and 7.7% of boards chop. Note the chunky 7.7% chop rate — it surfaces whenever the shared rank plays and the kickers don't. Spots like this are where stacks quietly disappear: the dominated hand can't fold pre and can't outrun the kicker post.
Translate that into a decision and it's simple pot-odds math: counting split pots as half, KJ carries 70.1% equity and K2s 29.9%. Against a pot-sized shove you need about 33% to call and about 25% versus a half-pot bet — so K2s needs real fold equity, not just its raw share, to justify stacking off.
Domination is where preflop hand-reading pays off. With KJ you want stacks in; with K2s you want out, because three outs and a prayer is not a stack-off — recognizing that you're crushed against a strong range is worth more than any postflop move.
KJ vs K2s FAQ
Who wins KJ vs K2s preflop?
KJ (King-Jack) is the favorite, winning 66.3% of all runouts, while K2s (King-Deuce Suited) wins 26.0%. The remaining 7.7% are split pots. Counting splits as half, KJ's preflop equity is 70.1%.
How often does K2s beat KJ?
K2s wins 26.0% of the time all-in preflop against KJ — roughly 1 in 4 — so it needs good pot odds or fold equity to get the money in profitably.
Why is K2s so bad against KJ?
Because they share a card, K2s is drawing to roughly three outs and chops 7.7% of the time — it wins only about 1 in 4. That's the danger of a dominated hand: too strong to fold, too far behind to outdraw, which is how kicker problems quietly cost full stacks.
Does KJ hold up against K2s after the flop?
KJ is still ahead on 83% of flops and stays ahead through the turn on 78% of boards; K2s takes the lead on the other 17% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AK VS A2S · AK VS A3S · AK VS A4S · AK VS A5S · AK VS A6S · AK VS A7S