What Is Under the Gun in Poker?

Under the gun (UTG) is the seat immediately to the left of the big blind, and it is the first player to act before the flop. Opening the betting with the whole table still to speak is the worst information position at the table, which is why UTG plays the tightest range of any seat — roughly the top 15-17% of hands in 6-max, and tighter still in a full-ring game. The name comes from the pressure of acting first with no idea what is behind you.

How the seat plays out

Preflop action starts left of the big blind and moves clockwise, so UTG opens with five players behind it in 6-max and seven in 9-max. Every one of them gets to see your raise before they decide anything. After the flop the disadvantage persists: UTG acts first against everyone except the blinds, on every street.

Say you open to 2.5bb with A♣J♦ from UTG in a $1/$2 game, risking $5 into a $3 pot. The BTN three-bets, the blinds fold, and you are now out of position with a hand dominated by most of what continues — AQ, AK, and every pair that wanted a bigger pot. The same A♣J♦ on the button is a comfortable open. The hand did not change; the seat did.

Why the range is so tight

The more players left to act, the tighter you open. UTG has five hands still to come in 6-max, and that alone is why its range starts near the top of the deck.

Seat (6-max)	Players still to act	Rough opening range
UTG	5	15-17%
BTN	2	40-45%

That is close to a threefold difference in width from the same 52 cards. Each extra player behind you is another chance to be three-bet, another chance to be dominated when you are called, and another pot you have to play from out of position for the rest of the hand.

How to play the seat well

• Raise or fold, never limp. Limping UTG invites the whole table in cheaply and gives up the initiative that makes a tight range profitable.
• Cut the marginal offsuit hands first. Offsuit broadways below AQ and weak suited aces are where a UTG range ends, not where it begins.
• Continue confidently against three-bets. Your range is already strong, so it defends and four-bets more readily than a BTN opening range would.
• Do not loosen because the table is passive. Position, not opponent quality, is what sets this range.

The solver-built preflop charts give you the exact UTG range for each table size and stack depth, so you can stop guessing where the line falls.

Learn that one range properly and every other position gets easier, because each of them is this range widened by a known amount. Get it wrong and you leak from the seat you play one hand in six from.