Villain is 35.24/6.61/.93

Limit Holdem Ring game
Limit: $5/$10
6 players
Converter

Pre-flop: (6 players) Hero is Button with 5 A
3 folds, Hero raises, SB 3-bets, BB folds, Hero calls.

Flop: T 9 5 (7SB, 2 players)
SB bets, Hero raises, SB calls.

Turn: A (5.5BB, 2 players)
SB checks, Hero bets, SB raises, Hero 3-bets, SB calls.

River: Q (11.5BB, 2 players)
SB bets, Hero ?

I would just call here and take a note of what he donked with.

If he's on a flat out bluff, then there's no value in raising.

If he has two pair, with the ace, then he almost always has you beat, set, ditto, etc.

Does a naked ace really play like this?

I'm sure something like T9, etc may do this as well, but meh.

I'll tell you what I think CM would say: You expected to get to the river and get one bet in when he c/c's, you get what you expected if you just call here. Something like that

Win 1, lose 2 situation, as well.

Beautiful!

Without a specific read on Villain donk-betting here with a worse hand, I just call.
His bet certainly says that he improved on the River.
Which means that you are usually behind.
Don't get greedy without the read.

Call down.

--CM