Data 9XA1 Main

One Spade vs. Four Spades

by Richard Pavlicek

First seat, any HCP

Found 29 comparisons in 40,069 deals from 72 major events 1996-2014.
First and last, and all swings of 5+ IMPs in between, are shown here.
Deals are rotated as needed to align comparison criteria to N-S.

1. 2013 BB Qualifying, Rd 15, Bd 4

N deals
Both vul K J 9 8 6 3 2
—
A J 10 9
7 5

West North East South West North East South
Smirnov Zimmermann Piekarek Multon Helgemo Rehder Helness Gromoeller
1 2 2 NT 4 Pass Pass
3 4 AP Pass

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
A 4 3 3 K 3 4 A
J 5 4 7 11 tricks won
2 Q Q 10
3 2 J K
11 tricks claimed

10 7
K 8 6 3
Q 8 4 2
K 10 2 Table 5
A Q J 10 5 2
K 7
J 9 8 3
7B375 7B376
42A57 42A56
Par NS +500 A Q 4
9 7 4
6 5 3
A Q 6 4

1 opening
4 N +1 +650
Tie 0
4 opening
4 N +1 +650
Tie 0

4. 2012 WC Qualifying, Rd 1, Bd 13

N deals
Both vul A K 10 7 6 4 2
4
K J 9 8
7

West North East South West North East South
Lorenzini LiV Rombaut Lung Fung Bompis Cheung Quantin
1 Pass 1 NT 4 Pass Pass
Pass 2 2 NT Pass Dbl Pass 5 AP
3 Pass 4 Pass
Pass 4 Dbl AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
A 4 5 7 5 3 K J
J 5 3 A 7 A 4 5
K 2 6 8 2 5 Q 4
4 8 K A 8 2 2 6
Q 2 6 5 6 tricks claimed
K 5 4 3
9 2 7 10
3 4 9 7
8 2 Q A

Q 9 8 3
A Q 10 3
A 10 6 3
5 Table J
J 9 8 6 2
5 2
A K 10 3 2
58366 =
85A67 =
Par NS -500 5
K 7 5
Q 7 4
Q J 9 8 6 4

1 opening
4 × N -3 -800
-16 0
4 opening
5 E -5 +500
+16 16

7. 2012 WC Quarterfinal, Seg 2, Bd 31

N deals
N-S vul A K J 8 7 6 3 2
J 9 3
J 6
—

West North East South West North East South
Upmark Zia Nystrom Hamman Meckstroth Bertheau Rodwell Cullin
1 Pass 2 4 Pass Pass
2 4 AP Dbl AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
10 2 Q 3 10 2 Q 9
A 9 6 4 A 3 6 4
K J 3 7 A J 7 10
A 6 5 10 K J 4 7
2 J K Q 2 6 K Q
8 tricks claimed 8 tricks claimed

—
A K Q 8 5
A 8 4 2
K 5 3 2 Table 9 4
10 6
K 9 7 5 3
9 8 7 4
38214 =
41BC9 41AB8
Par NS -920 Q 10 5
7 4 2
Q 10
A Q J 10 6

1 opening
4 N -2 -200
+7 7
4 opening
4 × N -2 -500
-7 16

8. 2012 WC Quarterfinal, Seg 3, Bd 33

N deals
None vul A K J 8 6 5 3 2
J
K 10 8
Q

West North East South West North East South
Nystrom Hamman Upmark Zia Rodwell Cullin Meckstroth Bertheau
1 Dbl Pass 4 Dbl Pass
2 4 AP Pass Pass

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
A 3 4 J A 3 7 J
K 6 7 2 K 6 4 2
A 4 7 10 8 7 Q A
K 9 3 Q 10 Q A 3
K 7 2 A 5 4 K 3
7 Q A 4 A 4 7 10
10 tricks claimed K 9 2 Q
J 2 3 7
K J
10 tricks claimed

Q 10
10 8 7 4
A 6 4
K 10 8 7 Table 9 4
A K 5 2
J 7
A J 6 5 2
5A474 =
53959 =
Par NS +300 7
Q 9 6 3
Q 9 5 3 2
9 4 3

1 opening
4 N = +420
-5 7
4 opening
4 × N = +590
+5 21

9. 2012 Spingold Quarterfinal, Seg 3, Bd 40

N deals
None vul K J 9 7 5 4 2
2
A 6 5 3
K

West North East South West North East South
Drijver Rodwell Brink Meckstroth Weinstein Verhees Levin v.Prooijen
1 2 3 4 5 Pass
4 4 5 Pass Pass Pass
Pass 5 AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
5 8 J 2 A 3 2 4
5 K A 3 A 3 2 K
Q 6 2 7 12 tricks won
9 4 Q 3
J 2 3 Q
10 8 J 2
9 tricks claimed

10 3
A K Q J 4 3
4 2
J 5 2 Table —
7 6 5
K Q 9 8
A Q 10 9 7 4
19061 =
54C7C =
Par NS -500 A Q 8 6
10 9 8
J 10 7
8 6 3

1 opening
5 N -2 -100
+8 15
4 opening
5 E +1 -420
-8 21

11. 2012 USBC Quarterfinal, Seg 6, Bd 78

N deals
None vul K J 9 8 7 6 4 2
A
3 2
J 5

West North East South West North East South
Cohler Meckstroth Spector Rodwell Zia Hurd Hamman Wooldridge
1 Dbl Pass 4 Dbl Pass
3 NT AP Pass Pass

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
K 3 5 A K 7 6 3
5 2 A 7 A 10 5 2
4 10 Q 3 4 J Q 2
6 2 K J K 3 5 A
J Q K A 2 A 3 4
12 tricks claimed J
6 tricks claimed

A Q 10
K 10 7 2
Q 6 5
Q 9 7 Table 3
J 6 3
A K 9 8 4
A K 10 8
16211 =
C7BCC B6BCC
Par NS -990 5
Q 9 8 5 4
J 10 7
6 4 3 2

1 opening
3 NT W +3 -490
+7 22
4 opening
4 × N -4 -800
-7 21

13. 2011 BB Qualifying, Rd 20, Bd 18

N deals
E-W vul Q 10 9 7 6 5 2
A J 5
A J
7

West North East South West North East South
Martens Haraldsson Jassem MagnussonM Baldursson Kalita JonssonT Gawrys
1 Pass 1 NT 4 Pass Pass
Pass 2 AP Pass

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
K 4 7 A K 4 7 5
2 K J 4 2 8 10 J
K 4 2 A 5 K J 8
7 3 A 5 K 4 2 A
K 6 J J 7 3 K 4
10 Q 5 5 A 5 J J
Q A 6 8 6 3 2 5
Q 8 3 5 9 3 7 6
9 tricks claimed Q A
9 tricks claimed

—
10 7 3
Q 8 3 2
Q 9 8 6 5 4 Table A K 8 4 3
K Q 6 2
K 5
J 3
78675 =
64768 =
Par NS +110 J
9 8 4
10 9 7 6 4
A K 10 2

1 opening
2 N +1 +140
+5 27
4 opening
4 N -1 -50
-5 21

15. 2011 BB Qualifying, Rd 6, Bd 29

N deals
Both vul A K 10 7 6 5 3
10
Q 10 9
7 4

West North East South West North East South
Verhees Gosney v.Prooijen Edgtton Hans de Wijs Nunn Muller
1 Pass 2 4 Pass 4 NT
Pass 2 Pass 2 NT Pass 5 Pass 6 (AP)
Pass 3 Pass 4
Pass 4 Pass 5
Pass 5 AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
5 3 2 9 A K 9 4
4 A K 3 K A 2 9
K A 2 10 Q 2 5 8
9 3 A 6 10 5
11 tricks claimed K 7 10 8
3 9 Q 5
J
10 tricks claimed

J 9 2
Q J 7 6
2
Q 9 8 5 3 Table 8
8 5
K J 7 6 5
A J 10 6 2
8C984 8B974
31349 =
Par NS +1100 Q 4
A K 9 4 3 2
A 8 4 3
K

1 opening
5 N = +650
+13 43
4 opening
6 N -2 -200
-13 21

16. 2011 BB Qualifying, Rd 20, Bd 28

N deals
E-W vul A K 9 7 5 4 3
Q J 8
Q 6 3
—

West North East South West North East South
JonssonT Gawrys Baldursson Kalita Jassem MagnussonM Martens Haraldsson
1 Dbl 2 4 Pass Pass
Pass 4 Pass Pass Pass
4 NT Pass 5 Dbl (AP)

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
J 2 5 8 2 5 6 8
3 4 A 5 A 8 2 6
K 4 2 3 K Q 6 2
7 8 A 6 4 9 10 5
J Q 9 9 5 4 3 7
J K 4 3 Q K A 3
2 6 7 Q 4 10 Q K
10 9 2 10 7 9 A 3
5 3 J K 10 tricks claimed
7 6 8 K

—
6 4 3
A J 10 5 2
8 6 4 3 2 Table Q 8
K 9 7 2
K 7
A Q J 9 7
AA552 AA642
32679 3277A
Par NS +200 J 10 6 2
A 10 5
9 8 4
K 10 5

1 opening
5 × E -1 +200
-6 43
4 opening
4 N = +420
+6 27

17. 2011 USBC Semifinal, Seg 6, Bd 81

N deals
None vul K Q J 10 7 6 4
9 7
A 10 9 2
—

West North East South West North East South
Schermer Platnick Chambers Diamond Hampson Welland Greco Bramley
1 Pass 2 4 Pass Pass
4 NT Pass 5 Pass 4 NT Pass 5 5
Pass 6 Pass Pass Pass 5 Pass Pass
Dbl AP Dbl AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
Q A 3 7 3 4 Q A
5 K A 2 2 5 2 8
9 8 5 10 8 3 K A
Q 2 2 3 Q A 5 9
9 10 K 6 K 10 J 2
4 Q A 3 7 9 9 3
2 5 3 7 9 tricks claimed
A 4 6 8
8 tricks claimed

5 3
—
K Q 8 7 6
A K Q 5 4 3 Table A 9
Q J 10
J 5 3
J 9 7 6 2
48A31 49B31
732AB =
Par NS +100 8 2
A K 8 6 5 4 3 2
4
10 8

1 opening
6 × N -4 -800
-11 43
4 opening
5 × N -2 -300
+11 38

19. 2010 Spingold Final, Seg 3, Bd 41

N deals
E-W vul A K Q 8 4 2
J
8
J 8 7 6 5

West North East South West North East South
Sontag Moss Berkowitz Gitelman Hampson Fantoni Greco Nunes
1 2 Pass 4 Pass Pass
3 3 5 5 Pass
Dbl AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
4 K A 7 4 Q A 7
K 8 2 4 K 8 3 4
9 5 J 2 10 J Q A
K A 5 J 5 3 A J
5 9 K 2 6
9 tricks claimed 10 tricks claimed

10 9 7 3
10 5
A K J 6 5
A 9 Table J
K Q 8 7 3 2
Q 10 7 3 2
4
5932B =
63AA2 =
Par NS +200 6 5
A 9 6 4
9 4
K Q 10 3 2

1 opening
5 × N -2 -300
-12 43
4 opening
4 N = +420
+12 50

20. 2010 Spingold Round of 32, Seg 1, Bd 3

N deals
E-W vul A K 10 9 5 4 3
7 6
Q 5
Q 5

West North East South West North East South
Klukowski Jacobs Markowicz Beatty El Ahmady Kowalski Sadek Melman
1 Pass 2 4 Pass Pass
3 3 Pass 4 (AP) 5 Pass Pass Dbl (AP)

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
J A 8 5 A 2 8 2
7 3 A 6 Q 6 4 K
K 2 8 2 A 8 5 4
7 4 A 5 A 3 7 6
J 8 4 Q J 5 5 9
10 2 K 5 7 8 4 6
K Q 6 2 10 3 10 2
A Q 6 3 A 5 6 3
9 tricks claimed K Q 9
8 tricks claimed

—
Q 10 9 8 5 3 2
K 8
A K 7 4 Table Q 6 2
4
J 10 9 6 4
10 9 8 6
99564 9A564
33879 33868
Par NS +420 J 8 7
A K J
A 7 3 2
J 3 2

1 opening
4 N -1 -50
-13 43
4 opening
5 × W -3 +800
+13 63

21. 2010 Vanderbilt Semifinal, Seg 1, Bd 8

N deals
None vul K J 10 9 8 7 2
10 6
Q
K J 2

West North East South West North East South
Becker Helgemo Strul Helness Zimmermann Brogeland Multon Saelensminde
1 2 Pass 4 Pass Pass
Pass 2 Pass 2 NT Pass
Pass 3 AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
6 3 5 9 5 6 8 Q
Q 5 6 8 J 6 3 A
6 5 K 8 7 2 Q 3
A 7 10 2 A 2 4 6
Q A 2 3 4 5 A J
4 7 9 2 9 tricks claimed
K
10 tricks claimed

A 5 4
J 8 7 4
8 7
A 8 7 6 Table 6
A Q 9 5
K 10 5 4 3 2
Q 4
79558 =
53875 =
Par NS +140 Q 3
K 3 2
A J 9 6
10 9 5 3

1 opening
3 N +1 +170
+6 49
4 opening
4 N -1 -50
-6 63

23. 2004 Olympiad Round of 16, Seg 3, Bd 43

N deals
None vul A J 10 8 5 3 2
K 5
7
10 9 4

West North East South West North East South
Hanlon Nystrom McGann Bertheau Lindkvist Carroll Fredin Garvey
1 2 Pass 4 Pass Pass
3 NT AP Pass

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
10 6 3 K A 3 10 7
4 7 A 6 K 6 8 2
2 6 8 K A 6 9 4
A 9 7 4 3 9 6 7
5 Q 3 7 8 3 Q 4
3 7 Q 5 K 9 2 6
8 3 K 9 A 10 5 7
A 10 10 2 5 5 Q J
8 6 A 4 A 7 8 K
K 9 2 J 5 tricks claimed
Q 10 5 J

K 7 4
Q 8
10 8 4
A K Q 5 2 Table Q 9 6
A 9 4 3 2
A K 5 2
8
45444 =
98989 98999
Par NS -400 —
J 10 7 6
Q J 9 6 3
J 7 6 3

1 opening
3 NT W +2 -460
-5 49
4 opening
4 N -5 -250
+5 68

25. 2004 Olympiad Qualifying, Rd 16, Bd 13

N deals
Both vul K Q J 7 6 4 2
2
A 4
J 7 4

West North East South West North East South
Fitzgibbon Winkler Mesbur Dumbovich Szalay Hanlon Macskasy McGann
1 Pass 1 NT 4 Pass Pass
Pass 2 Pass Pass Pass
Dbl Pass 3 AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
8 A 2 5 4 Q 3 2
3 4 J 10 A 10 4 5
5 6 K A 3 A 6 9
2 K A 3 3 A 9 2
Q 7 4 4 Q 5 8 7
J 9 7 5 K 10 6 7
6 10 J 9 J 5 5 9
K 10 3 2 7 3 8 8
K 4 3 5 4 8 9 K
6 7 10 Q 10 tricks claimed

A
10 9 7 3
K Q 8 7 3
K 6 2 Table 10 9 5
K 5 4
J 9 5
A 10 8 3
6A655 =
43787 =
Par NS +620 8 3
A Q J 8 6
10 6 2
Q 9 5

1 opening
3 E -2 +200
-9 49
4 opening
4 N = +620
+9 77

26. 2001 USBC Semifinal, Seg 4, Bd 57

N deals
E-W vul K Q J 10 7 6 5 3
K 10 3
Q 8
—

West North East South West North East South
Martel Meckstroth Stansby Rodwell Hamman Larsen Soloway Meltzer
1 Pass 3 4 Pass Pass
3 4 Dbl AP 4 NT Pass 5 5
Pass Pass Dbl Pass
6 AP

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
6 5 A 8 10 A 4 4
K Q 3 7 2 7 9 10
10 10 8 J K 2 9 2
3 2 A 4 Q 3 8 A
7 J K 2 4 6 8 2
A 4 9 3 K 6 7 5
8 tricks claimed 5 10 Q 3
Q 8 7 4
A 3 3 5

—
Q J 9 6 5 4
A K 10 9 4 2
6 Table A 8 2
8 2
6 3
A J 10 9 3 2
69335 =
43987 =
Par NS +140 9 4
A 7
J 7 5
K Q 8 7 5 4

1 opening
4 × N -2 -300
-12 49
4 opening
6 W -4 +400
+12 89

29. 1996 Olympiad Final, Seg 8, Bd 125

N deals
Both vul A K Q 10 8 7 5
Q 2
J 6 5
8

West North East South West North East South
Levy Sakul Mouiel Karwur Watulingas Multon Panelewen Szwarc
1 Pass 1 NT 4 Pass Pass
Pass 3 NT Pass 4 (AP) Pass

Lead 2nd 3rd 4th Lead 2nd 3rd 4th
7 4 K 8 4 3 10 Q
A 5 5 9 5 2 J 3
7 2 J 3 4 6 A 9
4 6 A 9 10 tricks won
12 tricks claimed

6 3
10 8 5
K Q 8 2
A K 3 2 Table 9 2
J 7 6 4
A 4 3
10 7 6 5
79766 79776
33656 =
Par NS +140 J 4
A K 9 3
10 9 7
Q J 9 4

1 opening
4 N +2 +680
+2 51
4 opening
4 N = +620
-2 91

Data 9XA1 Main Top One Spade vs. Four Spades