UTG Range: Why Tight Still Wins at 100bb

Under the gun is where discipline pays best and gets practiced least. At 100bb in a 6-max cash game, the solved UTG opening range is the tightest at the table, and every so often someone argues that modern aggressive poker has made early-position tightness obsolete. The solves say otherwise, and they say it for reasons that have nothing to do with timidity. This article makes the full case: the math of five players still to act, the positional tax that comes due on every later street, the domination problem that quietly ruins pretty hands, and what the modern UTG range actually keeps. It closes with the most expensive early-position leak in low and mid stakes games and how the range moves as stacks change.

Five players still to act

An open raise is a bet that nobody behind you can punish it. From the button that bet involves two opponents, both of whom have already paid a blind and will mostly fold. From under the gun it involves five opponents, none of whom has any money invested, all of whom are free to attack you with position for the rest of the hand.

The effect compounds in a way intuition undersells. Each player behind you is an independent chance to have woken up with a premium, and five independent chances add up fast. It is not that any single opponent is likely to hold a big pair. It is that someone at the table often does, and from UTG you have promised to act first against all of them. The steal component of your raise, the share of profit that comes from simply taking the blinds uncontested, is close to worthless here: too many players get a chance to continue before the pot is yours. So a UTG open has to make its money the hard way, by playing well against the ranges that call and 3-bet it. That is a much higher bar than a button open has to clear, and the range tightens to match.

Notice what this argument does not depend on: reads, table image, or the aggression level of the pool. It is structural. The number of players behind you is a fact of the seat, which is why the tight UTG range survives every metagame shift that was supposed to kill it.

The positional tax comes due postflop

Suppose your open gets action. Who called? Almost always a player between you and the button, which means you are now playing a raised pot out of position, usually for three streets, against a range strong enough to continue against an early open.

Out of position, a hand realizes less of its equity. You act first with no information, you cannot take a free card when you want one, you cannot control the size of the pot, and your bluffs have to run without the benefit of seeing weakness first. Marginal hands feel this tax hardest. A middling suited hand that plays fine with position behind a wide range becomes a liability when it must check dark into a strong range for the rest of the hand.

The numbers behind this are not small. The gap between what a marginal hand is worth with position and without it is frequently the entire margin between a profitable open and a losing one, which is why the same hand can be standard from the cutoff and unplayable two seats earlier against an identical set of opponents.

This is the second filter on the UTG range, and it explains its texture, not just its size. The hands that survive are hands that play simply and strongly: pairs that flop sets, broadways that flop top pair with a good kicker, suited aces that make the nut flush. Hands that need maneuvering room to show a profit, the bottom of the suited connector family and the weak suited gappers, are the first to go, because UTG is the seat with the least maneuvering room in the game.

Domination math: why pretty hands lose here

The third force is the one players feel least and pay most for. When you open UTG, the hands that continue against you are drawn from the top of everyone else's range. That means the pots you actually play are played against aces, big pairs, and better kickers at a far higher rate than the raw odds of the deck suggest.

Domination is what makes this expensive. KJo looks like a strong hand, and against a random hand it is. Against the range that calls or 3-bets an under the gun open, it is a machine for making second-best top pair. You flop a king, you bet, and the hands that give you action are AK and KQ. The times you win the pot are small, the times you lose it are large, and no postflop skill fully rescues a hand that is drawn dominated. The same logic applies to weak offsuit aces and to the lower offsuit broadways, which is exactly why the solved UTG range treats offsuit hands so harshly while keeping their suited versions far longer.

This is also why facing a 3-bet from early position is more survivable than it looks: a tight range is a strong range. When your opens are built from hands that dominate the field, the 3-bet ranges that attack you have a real problem, because you have the continuing hands.

Tight but not weak

It is worth being precise about what "tight" means, because the word suggests passivity and the solved range is anything but. The modern UTG range at 100bb is built from pocket pairs, the strong suited broadways, and the best suited aces, with the boundary hands mixed rather than played always or never. Every hand in it earns its seat for a reason: pairs for their set value and raw showdown strength, suited broadways because they make dominating top pairs and strong draws, the best suited aces for nut flushes and blocker value.

What the range is not is a collection of hands waiting to hit. It is an attacking range. It 3-bets when raised behind at meaningful frequency, it barrels good textures, and it is hard to bluff because so little of it misses everything. Rake tightens the picture further: the Simple GTO cash ranges are solved on the 500z rake structure, and rake taxes every marginal hand that sees a flop, which trims the borderline opens that a rake-free solve would keep. Tight is not a temperament here. It is the shape that survives five opponents, bad position, and a rake bill.

The leak: opening UTG like the cutoff

The most common early-position mistake is not a bizarre one. It is opening a late-position range from an early seat: the offsuit broadways, the middling suited connectors, the weak suited aces that are perfectly fine opens from the cutoff and money losers from under the gun.

The leak is expensive precisely because it is invisible. None of these hands loses much per attempt, and they all win sometimes, so nothing ever feels wrong. The losses arrive as a slow bleed: dominated top pairs paying off better kickers, out of position pots that never quite get there, 3-bets that force folds from hands that should never have opened. Worse, a too-wide UTG range degrades the hands that do belong in it. Your range is weaker on every flop, observant opponents attack it with more 3-bets and more floats, and every continue you make is played at a discount.

If you take one adjustment from this article, take this one. Fold the cutoff hands from under the gun. It is the cheapest fix in preflop poker, it requires no new skill, and the cash preflop charts will show you exactly where the line sits so the fix is precise rather than fearful.

How the range shifts with depth

The UTG range is not one object. The Simple GTO 6-max cash solves run from 40bb to 150bb, and both the sizing and the makeup of the range move across that span. The open is 2.5bb at 80bb and deeper, and drops to 2.2bb at 40bb to 60bb. The smaller short-stack sizing follows from leverage: with less money behind, a raise does not need to be as large to set up the stack for later streets, and risking less on each attempt matters more when the penalty for getting played back at is a bigger fraction of your stack.

The composition shifts alongside the size. Deep, the hands with nut potential gain ground, because there is more money behind to win when a suited ace makes its flush or a pair makes its set, and implied odds are the entire case for speculative hands. Shorter, that case weakens. At 40bb to 60bb the set-mining and flush-chasing hands lose part of their justification, while hands that win by simply being ahead hold steady. The range stays tight at every depth, but it is tight in a different mixture, which is one more reason a single memorized chart is not enough for a player who moves between deep and shallow tables.

Study UTG first, then widen out

There is a practical argument for starting your preflop work at under the gun rather than the button. The UTG range is the smallest, so it is the fastest to learn. It is the strongest, so errors in it are the most expensive per hand. And it is the anchor for everything else: every later seat is, roughly, the previous seat's range plus a new tier of hands, so once UTG is solid the rest of the map builds outward naturally. For that map across all six seats, 6-max cash RFI ranges by position is the survey; this article is the deep dive on the seat where the survey starts. For the general logic of what makes any hand playable from any seat, GTO preflop hands by position covers the framework.

Then get the actual range in front of you. The boundary hands, the mixes, and the depth shifts are exactly the details that a paragraph cannot carry and a solved chart can. The Cash Bundle has the full 6-max trees from 40bb to 150bb solved on the real rake structure, and the browser viewer serves the same ranges as live, interactive charts. Tight wins from under the gun. Precisely tight wins more.