Position

Position is the most fundamental concept in poker because it dictates how much information you have when making decisions. In each betting round, players act in order from earliest position (left of the big blind) to latest position (the dealer button). The later you act, the more you know about your opponents' intentions, the size of the pot, and the texture of the board. This information edge compounds across the flop, turn, and river, which is why a hand like 87s can be a profitable open from the Button but a clear fold from Under the Gun.

In a 6-Max MTT, the positions from earliest to latest are Under the Gun (UTG), Hijack (HJ), Cutoff (CO), Button (BTN), Small Blind (SB), and Big Blind (BB). Preflop, the blinds act last because they have already posted forced bets, but postflop the order flips: SB acts first, BB second, and the Button speaks last on every remaining street. This postflop ordering is what gives the Button its enormous edge, because every check, bet, or raise from your opponent gives you fresh information before you commit chips.

A concrete example: in our UTG opens 100bb range, you raise about 18% of hands, mostly pairs from 22 up, suited broadways, and a handful of suited connectors like JTs and T9s. From the Button, the same starting range jumps to roughly 45% because the only players left to act are the blinds, who post out of position and play with capped ranges. The hand AJo is a confident open from CO or BTN but a marginal one from HJ, and it is fold-or-mix territory from UTG. The hand alone has not changed; only your seat has.

Position changes decisions strategically in three big ways. First, it sets your opening width: every position one step closer to the button adds roughly 5 to 10 percentage points of opening frequency. Second, it dictates your defense plan: out of position you fold or 3-bet more and flat call less because cold-calling without position bleeds chips. Third, it shapes your postflop tree: in position you can check back marginal hands to control the pot, while out of position you face the choice of leading or check-calling with no good information.

The most common mistake recreational players make is treating every seat the same. They open KJo from UTG with the same confidence as from the Button, then get punished when it gets 3-bet by a competent opponent in late position. The fix is to internalize that hand value is positional: KJo is a premium hand on the BTN and a trap from UTG.

Related concepts to study next include the Button (the most profitable seat), the Cutoff (the second widest opener), the Hijack (the early-late transition), and Under the Gun (the tightest seat). See how the position effect plays out across our 6-max opening ranges from UTG, HJ, CO, BTN, SB, and BB at 100bb, then jump into the preflop quiz to test how quickly you can adjust your opening range when the seat changes.