BTN opens 2.5bb, Hero 3-bets 10bb, BTN 4-bets to 26bb

The math

GTO answer: Call

100bb deep facing a BTN 4-bet with AQo. 5-betting is bad (folds out everything we beat and gets called by hands that crush us). Folding is too tight at 100bb against a BTN range that includes bluffs. Calling 16 more to play a 53bb pot with position-disadvantaged but good equity vs the bluffs is the standard line.

Tags: preflop HU 4-bet AQo