Analyzing high-variance preflop matchups in heads-up play
I’ve been studying some heads-up ranges lately, and I’m finding it difficult to value some of the middle-strength hands when facing a pocket pair. Specifically, I’m looking at the situation where you have a hand like King-Ten offsuit and get pushed into an all-in by a pair like Jacks. It feels like a total coin flip at the table, but the math behind it must be more precise. Does anyone have a breakdown of how the odds actually shift based on the suits or the potential for straights in this specific scenario?
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That is a classic "overcard vs. underpair" situation, but it's actually not as close to a coin flip as it looks. I usually refer to the breakdown for equity kto vs jj preflop heads-up https://irishlucky.com/poker/math/heads-up-matchups/ to see that JJ is actually a significant favorite, usually around 65% to 35%. The reason is that even if you hit your King, the Jacks still have two outs for a set or can easily back-door into a straight. It really changes your strategy when you realize you're a nearly 2-to-1 underdog in that spot.