Wager Mage
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Should you double down 11 against 10?

When you double down, you risk losing double your original bet, but with 11 vs. 10, you win double your bet more often, giving you a higher average profit.

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Should I Double Down on 11 in Blackjack?

By John Grochowski on Tuesday October 9, 2018

Blackjack basic strategy includes a number of decisions that can give a player second and third thoughts. One of those comes when you have a two-card 11 and the dealer has a 10-value card face up. Basic strategy calls for you to double down — you make a second bet equal to your first, then get just one more card on the draw. That second bet against a strong dealer card is what gives players pause. One reader emailed me to ask, “Why should I double down on 11 when the dealer has a 10 up? It seems to me the dealer is trending to a really good hand, with a 20 likely and possibly a blackjack. This seems like spitting into the wind.” The potential dealer blackjack is not a factor in your hit/stand decision. At nearly all U. S. tables, the dealer will check for blackjack. If he has an Ace down, that stops the hand and you never get a chance to make your second bet. That leaves 12 other card denominations, four of which are 10 values that give the dealer a 20. If the down card is 7, 8 or 9, the dealer has a lesser standing hand, and if its 2, 3, 4, 5 or 6, the dealer must take a second hit and could bust. When all that is taken into account, your average profit per hand is larger if double than if you stand. Exact figures vary slightly depending on the composition of the hand. If you stand in a six-deck game, average profits are 11.86 cents per dollar wagered if you have 6-5, 11.79 with 7-4, 17.79 with 8-3, or 11.70 with 9-2. If you double, average profits are 17.85 cents per dollar of your original wager if you have 6-5, 17.84 with 7-4, 17.69 with 8-3 or 17.39 with 9-2. When you double down, you risk losing double your original bet, but with 11 vs. 10, you win double your bet more often, giving you a higher average profit.

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Do I hit on 16 vs 7?

If you play basic strategy at blackjack, you'll hit 16 if the dealer's face-up card is 7 or higher.

Hitting 16 against a Dealer 7 in Blackjack

By John Grochowski on Monday February 28, 2011

If you play basic strategy at blackjack, you’ll hit 16 if the dealer’s face-up card is 7 or higher. But players often tell me they can’t bring themselves to hit 16 when the dealer shows a 7. As one player put it, “I hit 16 against 10, but when it’s 16 against 7, I figure the dealer has a pretty good chance to bust.” That sounds logical enough, but actually it’s 16 vs. 10 that’s the borderline hand, not 16 vs. 7. Card counters will sometimes stand on 16 against a dealer’s 10, but go right on hitting 16 vs. 7. Now, the dealer will bust slightly more often starting with 7 than starting with 10 — 26 percent of the time on 7 as opposed to 23 percent of the time starting with 10. Note that in both cases the dealer will make a hand of 17 or better very close to three-quarters of the time. Even more importantly, if we do manage to improve a 16 without busting, we have a much better chance of winning against the dealer’s 7 than against a 10. What if we draw a 2, 3 or 4, to finish with 18, 19, or 20? If the dealer has a 10 down to a 7, we win, but if he has a 10 down to a 10, we lose with 18 or 19 and just push on 20. That’s just a little corner of the possibilities, but the bottom line is that we have more to gain by hitting 16 against a 7 than 16 against a 10.

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