Hero BB first to act with A♥4♥ (top pair, missed flush, weak kicker)

The math

GTO answer: Check

Two streets of checks in a limped pot mean villains' ranges are capped. Top pair weak kicker has decent showdown value but no value to bet, you fold out worse and get called by better. The 'call' option here means check, which is the correct line. You take a free showdown vs two capped ranges and win when nobody has a pair or has a worse Ax. Betting is a thin-value disaster, fold is far too tight given the pot odds you would get if anyone donk-bets and the bluff frequency on this missed-draw runout.

Tags: river family pot check showdown value