Preflop ranges by position: why your seat decides your hands

If you fix one thing in your game, fix your preflop ranges. Most expensive postflop messes start with a hand that should never have been played from that seat. The good news is that this is the most learnable part of poker, because solid starting ranges are well known and stable.

Position is information and initiative

The player who acts last sees what everyone else does before deciding. That is a permanent edge. Acting last lets you control the size of the pot, bluff more credibly, and value bet more thinly, because you have more information every street.

This is why the same hand changes value with your seat. A hand like king ten suited is a comfortable open from the button, where only two players are left to act, and a clear fold under the gun, where the whole table can wake up with something better. Nothing about the cards changed. The number of players who can beat you did.

Earlier seats need stronger hands

The rule is simple: the earlier you act, the stronger your range must be.

1. Under the gun and early position. Many players still to act, so open only hands that play well against strength. Big pairs, big suited broadways, the strongest aces.
2. Middle position and the lojack and hijack. A few fewer players behind, so the range widens to more suited connectors and broadways.
3. Cutoff and button. Few or no players left to act, so you can open a wide range and take advantage of position after the flop.
4. Small and big blind. You will act first on every later street, so you defend more carefully and tighten the hands you play for a raise.

A button raise can profitably include hands the under the gun open never would, simply because position carries them.

Opening, calling, and three betting

Your preflop range is not one list, it is three jobs:

• Opening (raising first in). The hands strong enough to take the initiative from your seat.
• Calling a raise. Hands good enough to continue but not to reraise, usually played in position where they flop well.
• Three betting. A mix of your strongest hands for value and some hands just below your calling range as bluffs, so your reraises are balanced.

Most leaks at the table are decided before the flop, by playing too many hands from early seats or defending the blinds too loosely.

How to use a range chart

A chart maps every starting hand to an action for a given position. The preflop charts on this site show solid opening and defending ranges by seat, laid out on the standard thirteen by thirteen grid: pairs down the diagonal, suited hands above, offsuit hands below. The exact frequencies come from the same open-source DCFR solver that drives the rest of the site, so the chart and the analyzer agree on the same baseline.

Use it as training, not as a lookup during real play. Pick the seat you are studying, read the recommended action for each hand, and quiz yourself until the borders are automatic. The exact hands at the edges matter less than internalising the shape: tight from early, wide from late, careful in the blinds.

Ranges are a starting point

Charts give you a sound default. Real tables then nudge it. At a passive table you can open a little wider and isolate weak players. Against aggressive opponents who three bet often, tighten your opens from early seats. The chart is the baseline you adjust from, the same way a GTO solution is a baseline you deviate from with a read.

Bottom line

Position decides which hands are profitable, because acting last is a lasting edge and earlier seats face more players who can beat them. Open tight early and wide late, treat opening, calling, and three betting as separate jobs, and use the preflop charts to drill the borders until they are reflex. Then adjust from that baseline at the table.