BTN opening range chart

BTN opens 566 hands, 42.7%, more than three times UTG's range, because only the two blinds are left to act and neither has shown any strength yet. Every hand CO opens still opens from BTN, and BTN adds every remaining pair down to 22, the suited hands K2s through K8s and Q8s, suited gappers and connectors down to 43s, and offsuit aces all the way down to A2o, plus 76o, 87o, 97o, T8o and Q9o. Position, not hand strength, is doing the work on this chart: acting last after the flop is worth more here than anywhere else at the table.