Doubling down on blackjack?

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Counting DJ

New Member
When you get a natural blackjack, and the count is high, is it legal to double down. Obviously, this would increase your profits, but I was wondering if it's legal in most places, or totally unheard of??

Also, do the smaller casinos really break people's knuckles if they catch them counting. Has anybody on this forum every been roughed up by a casino??
 
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shadroch

Well-Known Member
Doubling down on a BJ does not increase your profits,it destroys them.
Most casinos allow it,a few don't,mostly6-5 games.
Casinos have roughed up players. Its pretty rare these days,but it isn't impossible.
 
C

Counting DJ

New Member
How is this true?

You say it destroys your profits, but if the count is good, u are more likely to win, and you win more than just taking a natural... please say what you mean instead of giving a short, cocky remark.
 
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shadroch

Well-Known Member
Do the math yourself. More likely to win what? You are giving up a 100% win rate at 1.5 units to chance winning X at 2 units?
How you going to like it when you double your bet,pull a ten and tie the dealers 5 card 21?
Whats your EV for doubling an 11 in a high count? Whats the EV for an already dealt BJ?
 
bj bob

bj bob

Well-Known Member
Counting DJ said:
You say it destroys your profits, but if the count is good, u are more likely to win, and you win more than just taking a natural... please say what you mean instead of giving a short, cocky remark.
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Shad's correct here. Doubling a BJ has tremendous risks. Once you've been dealt a BJ the hand is history. You are due 150% on your original bet and no further risk is involved. Doubling, on the other hand keeps the hand going and moreover requires additional outlay from your BR. There may be a count that allows it, but it would be extremely high and in no circumstance is it worth the exposure of a bewildered dealer calling the play to a BP's attention.
As far as the tone of his response, he answered your questions concisely and without any barbs, so I see no issues here. Besides, if you think these answers were curt, you should have heard him the week after St. Paddy's Day recuperating from that gnarly hangover.:flame:
 
Mr. Fenner

Mr. Fenner

Member
runningaces said:
First sentance yes, 2nd sentance huh?
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Example, you win a double down, think it's your lucky night, and bet the morgage. Okay, I agree maybe get greedy in a +18 shoe :grin:
 
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runningaces

Well-Known Member
Mr. Fenner said:
Example, you win a double down, think it's your lucky night, and bet the morgage. Okay, I agree maybe get greedy in a +18 shoe :grin:
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NO, I am def. saying never double down on a BJ! But, maybe I'm confusing being smart with being greedy in the 2nd sentance, I'm saying if an opportunity arises during a shoe I am going to get greedy as hell, not by doubling down on BJ, but by betting like a maniac.
 
EasyRhino

EasyRhino

Well-Known Member
Even if you drew a 10 on your double-down, your 21 suddenly has a 10% chance of merely pushing against the dealer, and that's not counting all the horrible things that can happen if you don't get a ten.

Basically, there's no positive count that can overwhelm taking a sure fire 1.5 unit win.
 
ihate17

ihate17

Well-Known Member
trying to make it as simple as possible

You bet $10 and got a blackjack. Since you are now considering doubling down on that blackjack we know the dealer did not have a blackjack also, so you have 0 risk and 150% profit by not doubling.
Instead you chose to double and you are not only risking another $10 but now risking also the original $10 (which no longer had any risk if you took the natural), and to win what? $5 extra. So in fact you are now betting $20 to try and win $5???
Can you think of a worse bet you can make in this casino?

ihate17
 
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shadroch

Well-Known Member
ihate17 said:
You bet $10 and got a blackjack. Since you are now considering doubling down on that blackjack we know the dealer did not have a blackjack also, so you have 0 risk and 150% profit by not doubling.
Instead you chose to double and you are not only risking another $10 but now risking also the original $10 (which no longer had any risk if you took the natural), and to win what? $5 extra. So in fact you are now betting $20 to try and win $5???
Can you think of a worse bet you can make in this casino?

ihate17
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Talk about hitting one out of the park. Hope you don't mind if I steal that explanation.Of course,I'll have to make it a bit more curt.
 
C

callipygian

Well-Known Member
You might double a blackjack in a tournament game.

For instance, let's say both you and your opponent have $1,000 on the final hand. He bets $600, you bet $500. He plays first and wins. You are dealt a blackjack. You need to double your blackjack.

But in a regular game? Hell no.
 
moo321

moo321

Well-Known Member
Let's settle this once and for all: what's the index for doubling a blackjack vs. 5 and vs. 6? I believe it's like +22 or something obscene.
 
ihate17

ihate17

Well-Known Member
double A,10 is not the same as double blackjack

nightspirit said:
double A,10 vs. 5 and 6 @ 9.5 CE-adjusted
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You split 10,10 vs 5 or 6 and now have an A,10. This is not the same as doubling a blackjack since it does not pay 3/2 and can be pushed.

ihate17
 
EasyRhino

EasyRhino

Well-Known Member
callipygian said:
You might double a blackjack in a tournament game.
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I haven't played in any tournaments, but when one was going on nearby, naturals actually paid 2:1. Which pretty much eliminated this as a tactic.
 
QFIT

QFIT

Well-Known Member
moo321 said:
Let's settle this once and for all: what's the index for doubling a blackjack vs. 5 and vs. 6? I believe it's like +22 or something obscene.
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That sounds familiar. Of course you really don't want to eat any cards with that count if there's a chance of another round and there's a cut card. I have only made this play once in my life. I had been recently bounced from another club, I was being watched and I made a min bet on a high count because of the heat. Really pissed me off that I got a snapper on a high count with a min bet. I doubled. I lost the bet. But, the heat disappeared:)
 
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