Villain tells me had 6d 4d, which seems plausible:
Hero (Button) ($6720)
Preflop: Hero is Button with A, K
1 fold, MP bets $60, 1 fold, Hero raises to $240, 2 folds, MP calls $180
Flop: ($510) 10, J, 3 (2 players)
MP checks, Hero bets $333, MP raises to $980, Hero calls $647
Turn: ($2470) 5 (2 players)
MP bets $1650, Hero calls $1650
River: ($5770) 2 (2 players)
MP bets $2200, Hero raises to $3850 (All-In), 1 fold
Total pot: $10170 | Rake: $3
Hero didn’t show A, K (nothing).
Outcome: Hero won $10167
This isn’t intrinsically a bad line to take as a bluff, but if Villain is telling the truth, he chose a bad hand for it. The problem is that he’s never really in a position to make a strong hand. I’d been 3-betting him a lot, but 300+ BB’s deep, you can’t get away with calling out of position with a small gap suited connector. Even he makes a flush, there will be many spots where he can’t get all his money in with confidence. 64s just doesn’t make many hands worth 300 BBs, and consequently isn’t worth playing, at least not from out of position.
Likewise on the flop he’s got a single backdoor draw that isn’t necessarily to the nuts. Check-raising light is fine, but he should at least choose hands that have some equity.
He has to bet the turn, but it really highlights the problem with his pre-flop and flop play. Now he’s semi-bluffing with a draw to a hand weaker than what he’s trying to represent. Once he hits the straight, his hand is overrepresented, and he still can’t bet it with confidence. In fact, he ends up bet-folding the river.