Double Down Stud
Introduction
Double Down Stud is unique in that it is played roughly equally as a table game and an electronic game. That creates a problem in whether to address the pay tables on a "to one" (table games) or "for one" (electronic) basis in this section. So I have decided to do it both ways. As always, wins or losses are relative to the initial wager.
The Rules
Return Tables
Double Down Stud - Jacks or Better
Hand |
Double |
Pays (to one) |
Pays (for one) |
Combinations |
Probability |
Return |
Royal flush |
No |
3999 |
4000 |
0 |
0 |
0 |
Straight flush |
No |
199 |
200 |
0 |
0 |
0 |
Four of a kind |
No |
49 |
50 |
0 |
0 |
0 |
Full house |
No |
11 |
12 |
0 |
0 |
0 |
Flush |
No |
8 |
9 |
0 |
0 |
0 |
Straight |
No |
5 |
6 |
31248 |
0.002405 |
0.012023 |
Three of a kind |
No |
3 |
4 |
50688 |
0.003901 |
0.011702 |
Two pair |
No |
2 |
3 |
152064 |
0.011702 |
0.023404 |
Pair: J-A |
No |
1 |
2 |
657720 |
0.050614 |
0.050614 |
Pair: 6-10 |
No |
0 |
1 |
816480 |
0.062831 |
0 |
Loser |
No |
-1 |
0 |
8035992 |
0.618401 |
-0.618401 |
Royal flush |
Yes |
7998 |
7999 |
20 |
0.000002 |
0.01231 |
Straight flush |
Yes |
398 |
399 |
180 |
0.000014 |
0.005513 |
Four of a kind |
Yes |
98 |
99 |
3120 |
0.00024 |
0.023529 |
Full house |
Yes |
22 |
23 |
18720 |
0.001441 |
0.031693 |
Flush |
Yes |
16 |
17 |
25540 |
0.001965 |
0.031446 |
Straight |
Yes |
10 |
11 |
19752 |
0.00152 |
0.0152 |
Three of a kind |
Yes |
6 |
7 |
223872 |
0.017228 |
0.103367 |
Two pair |
Yes |
4 |
5 |
465696 |
0.035837 |
0.143348 |
Pair: J-A |
Yes |
2 |
3 |
1031880 |
0.079407 |
0.158814 |
Pair: 6-10 |
Yes |
0 |
1 |
1295520 |
0.099695 |
0 |
Loser |
Yes |
-2 |
-1 |
166308 |
0.012798 |
-0.025596 |
Total |
|
|
|
12994800 |
1 |
-0.021033 |
Double Down Stud - Jacks or Better
Hand |
Double |
Pays (to one) |
Pays (for one) |
Combinations |
Probability |
Return |
Royal flush |
No |
999 |
1000 |
0 |
0 |
0 |
Straight flush |
No |
199 |
200 |
0 |
0 |
0 |
Four of a kind |
No |
49 |
50 |
0 |
0 |
0 |
Full house |
No |
11 |
12 |
0 |
0 |
0 |
Flush |
No |
8 |
9 |
0 |
0 |
0 |
Straight |
No |
5 |
6 |
31248 |
0.002405 |
0.012023 |
Three of a kind |
No |
3 |
4 |
50688 |
0.003901 |
0.011702 |
Two pair |
No |
2 |
3 |
152064 |
0.011702 |
0.023404 |
Pair: J-A |
No |
1 |
2 |
657720 |
0.050614 |
0.050614 |
Pair: 6-10 |
No |
0 |
1 |
816480 |
0.062831 |
0 |
Loser |
No |
-1 |
0 |
8035992 |
0.618401 |
-0.618401 |
Royal flush |
Yes |
1998 |
1999 |
20 |
0.000002 |
0.003075 |
Straight flush |
Yes |
398 |
399 |
180 |
0.000014 |
0.005513 |
Four of a kind |
Yes |
98 |
99 |
3120 |
0.00024 |
0.023529 |
Full house |
Yes |
22 |
23 |
18720 |
0.001441 |
0.031693 |
Flush |
Yes |
16 |
17 |
25540 |
0.001965 |
0.031446 |
Straight |
Yes |
10 |
11 |
19752 |
0.00152 |
0.0152 |
Three of a kind |
Yes |
6 |
7 |
223872 |
0.017228 |
0.103367 |
Two pair |
Yes |
4 |
5 |
465696 |
0.035837 |
0.143348 |
Pair: J-A |
Yes |
2 |
3 |
1031880 |
0.079407 |
0.158814 |
Pair: 6-10 |
Yes |
0 |
1 |
1295520 |
0.099695 |
0 |
Loser |
Yes |
-2 |
-1 |
166308 |
0.012798 |
-0.025596 |
Total |
|
|
|
12994800 |
1 |
-0.030267 |
Double Down Stud - Jacks or Better
Hand |
Double |
Pays (to one) |
Pays (for one) |
Combinations |
Probability |
Return |
Royal flush |
No |
999 |
1000 |
0 |
0 |
0 |
Straight flush |
No |
399 |
400 |
0 |
0 |
0 |
Four of a kind |
No |
99 |
100 |
0 |
0 |
0 |
Full house |
No |
14 |
15 |
0 |
0 |
0 |
Flush |
No |
9 |
10 |
0 |
0 |
0 |
Straight |
No |
5 |
6 |
31248 |
0.002405 |
0.012023 |
Three of a kind |
No |
3 |
4 |
63360 |
0.004876 |
0.014627 |
Two pair |
No |
2 |
3 |
190080 |
0.014627 |
0.029255 |
Pair: J-A |
No |
1 |
2 |
657720 |
0.050614 |
0.050614 |
Pair: 7-10 |
No |
0 |
1 |
653184 |
0.050265 |
0 |
Loser |
No |
-1 |
0 |
8452728 |
0.65047 |
-0.65047 |
Royal flush |
Yes |
1998 |
1999 |
20 |
0.000002 |
0.003075 |
Straight flush |
Yes |
798 |
799 |
180 |
0.000014 |
0.011054 |
Four of a kind |
Yes |
198 |
199 |
3120 |
0.00024 |
0.047539 |
Full house |
Yes |
28 |
29 |
18720 |
0.001441 |
0.040336 |
Flush |
Yes |
18 |
19 |
25540 |
0.001965 |
0.035377 |
Straight |
Yes |
10 |
11 |
19752 |
0.00152 |
0.0152 |
Three of a kind |
Yes |
6 |
7 |
211200 |
0.016253 |
0.097516 |
Two pair |
Yes |
4 |
5 |
427680 |
0.032912 |
0.131647 |
Pair: J-A |
Yes |
2 |
3 |
1031880 |
0.079407 |
0.158814 |
Pair: 7-10 |
Yes |
0 |
1 |
1036416 |
0.079756 |
0 |
Loser |
Yes |
-2 |
-1 |
171972 |
0.013234 |
-0.026468 |
Total |
|
|
|
12994800 |
1 |
-0.029861 |
Double Down Stud - Bonus Deuces
Hand |
Double |
Pays (to one) |
Pays (for one) |
Combinations |
Probability |
Return |
Natural royal flush |
No |
999 |
1000 |
0 |
0 |
0 |
Four deuces plus ace |
No |
799 |
800 |
0 |
0 |
0 |
Four deuces |
No |
399 |
400 |
0 |
0 |
0 |
Wild royal flush |
No |
79 |
80 |
0 |
0 |
0 |
Five aces |
No |
199 |
200 |
0 |
0 |
0 |
Five 3-5 |
No |
79 |
80 |
0 |
0 |
0 |
Five 6-K |
No |
39 |
40 |
0 |
0 |
0 |
Straight flush |
No |
11 |
12 |
0 |
0 |
0 |
Four of a kind |
No |
5 |
6 |
0 |
0 |
0 |
Full house |
No |
4 |
5 |
0 |
0 |
0 |
Flush |
No |
3 |
4 |
0 |
0 |
0 |
Straight |
No |
2 |
3 |
74592 |
0.00574 |
0.01148 |
Three of a kind |
No |
1 |
2 |
547200 |
0.042109 |
0.042109 |
Two pair |
No |
0 |
1 |
316800 |
0.024379 |
0 |
Kings or better |
No |
0 |
1 |
681288 |
0.052428 |
0 |
Nothing |
No |
-1 |
0 |
7823640 |
0.602059 |
-0.602059 |
Natural royal flush |
Yes |
1998 |
1999 |
20 |
0.000002 |
0.003075 |
Four deuces plus ace |
Yes |
1598 |
1599 |
20 |
0.000002 |
0.002459 |
Four deuces |
Yes |
798 |
799 |
220 |
0.000017 |
0.01351 |
Wild royal flush |
Yes |
158 |
159 |
2400 |
0.000185 |
0.029181 |
Five aces |
Yes |
398 |
399 |
260 |
0.00002 |
0.007963 |
Five 3-5 |
Yes |
158 |
159 |
780 |
0.00006 |
0.009484 |
Five 6-K |
Yes |
78 |
79 |
2080 |
0.00016 |
0.012485 |
Straight flush |
Yes |
22 |
23 |
10340 |
0.000796 |
0.017505 |
Four of a kind |
Yes |
10 |
11 |
157760 |
0.01214 |
0.121402 |
Full house |
Yes |
8 |
9 |
63360 |
0.004876 |
0.039006 |
Flush |
Yes |
6 |
7 |
72360 |
0.005568 |
0.03341 |
Straight |
Yes |
4 |
5 |
236568 |
0.018205 |
0.072819 |
Three of a kind |
Yes |
2 |
3 |
1228200 |
0.094515 |
0.189029 |
Two pair |
Yes |
0 |
1 |
158400 |
0.012189 |
0 |
Kings or better |
Yes |
0 |
1 |
1343352 |
0.103376 |
0 |
Nothing |
Yes |
-2 |
-1 |
275160 |
0.021175 |
-0.042349 |
Total |
|
|
|
12994800 |
1 |
-0.039488 |
Strategy
Here are the hands the player should raise on under the most liberal with the 2.10% house advantage.
Michael Shackleford, ASA
- Players make an initial wager.
- The dealer gives each player one card face up and deals four community cards, three up and one down. Each hand is dealt from a freshly shuffled single deck.
- Each player has the option to double their bet or not.
- The dealer turns over the down card.
- Winning hands pay according to the payoff table.
- Any pat hand of a pair of 6's or greater
- Four to a flush, straight flush, or royal flush
- Four to any outside straight
- Unsuited JQKA (zero house edge)
Written by:
Michael Shackleford