Veldhoven 2023 — player statistics

Four double-dummy measures per player plus bidding activity, over every board they played, and an opponent-adjusted (strength-of-schedule) Butler. Each table lists all players and is sortable by any column. Double-dummy is idealised — the true best play needs all four hands — so read these as tendencies, not verdicts.

Butler vs double-dummy par↑ top

IMPs per board scored above (+) or below (−) the board’s minimax par — what real bidding and play (theirs and the opponents’) added or gave away against perfect double-dummy play. Players with few boards are greyed. Click a column header to sort; filter by name or team.

#	Player	Team	Boards	/board	Total
1	A.Pedmanson	🇪🇪 ESTONIA	126	+1.23	+155.0
2	J.Vahk	🇪🇪 ESTONIA	126	+1.23	+155.0
3	E.Xiao	🇺🇸 USA1	84	+0.92	+77.0
4	J.Xiao	🇺🇸 USA1	84	+0.92	+77.0
5	A.Chen	🇺🇸 USA1	84	+0.83	+70.0
6	B.Zhang	🇺🇸 USA1	84	+0.83	+70.0
7	A.Bukat	🇵🇱 POLAND	126	+0.83	+105.0
8	M.Klimiuk	🇵🇱 POLAND	126	+0.83	+105.0
9	J.Boge	🇺🇸 USA2	126	+0.45	+57.0
10	A.Silverstein	🇺🇸 USA2	126	+0.45	+57.0
11	S.Grabala	🇵🇱 POLAND	84	+0.33	+28.0
12	J.Luczeczko	🇵🇱 POLAND	84	+0.33	+28.0
13	C.Chen	🇺🇸 USA1	84	-0.44	-37.0
14	K.Ge	🇺🇸 USA1	84	-0.44	-37.0
15	D.Balof	🇺🇸 USA2	126	-0.63	-79.0
16	E.Derman	🇺🇸 USA2	126	-0.63	-79.0
17	S.Allas	🇪🇪 ESTONIA	126	-1.46	-184.0
18	E.Orma	🇪🇪 ESTONIA	126	-1.46	-184.0
19	X.Tang	🇨🇳 CHINA	28	+1.79	+50.0
20	Z.Zhang	🇨🇳 CHINA	28	+1.79	+50.0
21	J.Brekke	🇳🇴 NORWAY	28	+1.36	+38.0
22	S.Lillejord	🇳🇴 NORWAY	28	+1.36	+38.0
23	H.Wang	🇨🇳 CHINA	28	+0.57	+16.0
24	H.Yu	🇨🇳 CHINA	28	+0.57	+16.0
25	I.Mathisen	🇳🇴 NORWAY	14	+0.43	+6.0
26	M.Moe	🇳🇴 NORWAY	14	+0.43	+6.0
27	B.Biborka	🇭🇺 HUNGARY	28	+0.14	+4.0
28	M.Juhasz-Molnar	🇭🇺 HUNGARY	28	+0.14	+4.0
29	K.Kisielewski	🇵🇱 POLAND	42	-0.45	-19.0
30	J.Michalski	🇵🇱 POLAND	42	-0.45	-19.0
31	C.Chan	🇹🇼 CHINESE TAIPEI	28	-0.57	-16.0
32	Y.Cheng	🇹🇼 CHINESE TAIPEI	28	-0.57	-16.0
33	A.Kovacs	🇭🇺 HUNGARY	42	-0.67	-28.0
34	D.Tokes	🇭🇺 HUNGARY	42	-0.67	-28.0
35	D.Chen	🇹🇼 CHINESE TAIPEI	28	-1.21	-34.0
36	Z.Lai	🇹🇼 CHINESE TAIPEI	28	-1.21	-34.0
37	G.Szabo	🇭🇺 HUNGARY	14	-1.29	-18.0
38	Z.Zabradi	🇭🇺 HUNGARY	14	-1.29	-18.0
39	K.Austad	🇳🇴 NORWAY	42	-1.62	-68.0
40	E.Osen	🇳🇴 NORWAY	42	-1.62	-68.0
41	C.Lu	🇹🇼 CHINESE TAIPEI	28	-2.11	-59.0
42	C.Peng	🇹🇼 CHINESE TAIPEI	28	-2.11	-59.0
43	S.Chen	🇨🇳 CHINA	28	-2.29	-64.0
44	Z.Yuan	🇨🇳 CHINA	28	-2.29	-64.0

Opening-lead accuracy↑ top

How often a player’s opening lead held declarer to the same tricks as the best defensive lead double-dummy. Players with few boards are greyed. Click a column header to sort; filter by name or team.

#	Player	Team	Leads	On target	Conceded
1	J.Luczeczko	🇵🇱 POLAND	3	100.0%	0.00
2	M.Klimiuk	🇵🇱 POLAND	15	100.0%	0.00
3	E.Xiao	🇺🇸 USA1	7	100.0%	0.00
4	J.Xiao	🇺🇸 USA1	11	100.0%	0.00
5	D.Balof	🇺🇸 USA2	20	95.0%	0.10
6	E.Derman	🇺🇸 USA2	17	94.1%	0.06
7	A.Bukat	🇵🇱 POLAND	11	90.9%	0.09
8	S.Allas	🇪🇪 ESTONIA	6	83.3%	0.17
9	C.Chen	🇺🇸 USA1	14	78.6%	0.21
10	E.Orma	🇪🇪 ESTONIA	9	77.8%	0.22
11	J.Vahk	🇪🇪 ESTONIA	31	77.4%	0.26
12	K.Ge	🇺🇸 USA1	17	76.5%	0.23
13	A.Chen	🇺🇸 USA1	4	75.0%	0.25
14	B.Zhang	🇺🇸 USA1	4	75.0%	0.75
15	A.Silverstein	🇺🇸 USA2	13	69.2%	0.39
16	S.Grabala	🇵🇱 POLAND	6	66.7%	0.67
17	A.Pedmanson	🇪🇪 ESTONIA	28	64.3%	0.46
18	J.Boge	🇺🇸 USA2	19	47.4%	0.63
19	D.Tokes	🇭🇺 HUNGARY	1	100.0%	0.00
20	S.Chen	🇨🇳 CHINA	1	100.0%	0.00
21	Z.Yuan	🇨🇳 CHINA	6	100.0%	0.00
22	C.Peng	🇹🇼 CHINESE TAIPEI	4	100.0%	0.00
23	G.Szabo	🇭🇺 HUNGARY	3	100.0%	0.00
24	Z.Zabradi	🇭🇺 HUNGARY	2	100.0%	0.00
25	K.Austad	🇳🇴 NORWAY	10	90.0%	0.10
26	K.Kisielewski	🇵🇱 POLAND	9	88.9%	0.22
27	X.Tang	🇨🇳 CHINA	6	83.3%	0.17
28	Z.Zhang	🇨🇳 CHINA	5	80.0%	0.20
29	M.Juhasz-Molnar	🇭🇺 HUNGARY	4	75.0%	0.25
30	Z.Lai	🇹🇼 CHINESE TAIPEI	8	75.0%	0.38
31	J.Michalski	🇵🇱 POLAND	11	72.7%	0.27
32	S.Lillejord	🇳🇴 NORWAY	7	71.4%	0.29
33	C.Lu	🇹🇼 CHINESE TAIPEI	3	66.7%	0.33
34	D.Chen	🇹🇼 CHINESE TAIPEI	8	62.5%	0.38
35	E.Osen	🇳🇴 NORWAY	7	57.1%	0.57
36	J.Brekke	🇳🇴 NORWAY	2	50.0%	0.50
37	A.Kovacs	🇭🇺 HUNGARY	2	50.0%	0.50
38	B.Biborka	🇭🇺 HUNGARY	2	50.0%	2.50

Declarer-play accuracy↑ top

How often declarer took at least the double-dummy makeable tricks after the actual opening lead — i.e. didn’t leave tricks on the table. Players with few boards are greyed. Click a column header to sort; filter by name or team.

#	Player	Team	Contracts	On target	Conceded
1	A.Silverstein	🇺🇸 USA2	8	100.0%	0.00
2	A.Pedmanson	🇪🇪 ESTONIA	19	89.5%	0.10
3	S.Grabala	🇵🇱 POLAND	8	87.5%	0.12
4	C.Chen	🇺🇸 USA1	14	85.7%	0.14
5	J.Vahk	🇪🇪 ESTONIA	20	85.0%	0.15
6	J.Luczeczko	🇵🇱 POLAND	11	81.8%	0.27
7	J.Xiao	🇺🇸 USA1	11	81.8%	0.27
8	A.Chen	🇺🇸 USA1	10	80.0%	0.30
9	A.Bukat	🇵🇱 POLAND	28	78.6%	0.21
10	E.Orma	🇪🇪 ESTONIA	9	77.8%	0.44
11	J.Boge	🇺🇸 USA2	16	75.0%	0.31
12	M.Klimiuk	🇵🇱 POLAND	16	75.0%	0.38
13	E.Derman	🇺🇸 USA2	17	70.6%	0.47
14	B.Zhang	🇺🇸 USA1	10	70.0%	0.40
15	D.Balof	🇺🇸 USA2	16	68.8%	0.50
16	K.Ge	🇺🇸 USA1	11	63.6%	0.46
17	E.Xiao	🇺🇸 USA1	13	53.8%	0.54
18	S.Allas	🇪🇪 ESTONIA	4	50.0%	0.50
19	X.Tang	🇨🇳 CHINA	6	100.0%	0.00
20	S.Lillejord	🇳🇴 NORWAY	2	100.0%	0.00
21	J.Michalski	🇵🇱 POLAND	4	100.0%	0.00
22	A.Kovacs	🇭🇺 HUNGARY	8	100.0%	0.00
23	D.Tokes	🇭🇺 HUNGARY	3	100.0%	0.00
24	S.Chen	🇨🇳 CHINA	5	100.0%	0.00
25	C.Peng	🇹🇼 CHINESE TAIPEI	4	75.0%	0.25
26	J.Brekke	🇳🇴 NORWAY	3	66.7%	0.33
27	Z.Zabradi	🇭🇺 HUNGARY	3	66.7%	0.33
28	G.Szabo	🇭🇺 HUNGARY	6	66.7%	0.50
29	C.Lu	🇹🇼 CHINESE TAIPEI	3	66.7%	1.00
30	Z.Lai	🇹🇼 CHINESE TAIPEI	8	62.5%	0.62
31	B.Biborka	🇭🇺 HUNGARY	4	50.0%	0.50
32	Z.Yuan	🇨🇳 CHINA	2	50.0%	0.50
33	M.Juhasz-Molnar	🇭🇺 HUNGARY	4	50.0%	0.75
34	D.Chen	🇹🇼 CHINESE TAIPEI	4	50.0%	0.75
35	Z.Zhang	🇨🇳 CHINA	11	45.5%	0.73
36	E.Osen	🇳🇴 NORWAY	7	42.9%	1.14
37	K.Kisielewski	🇵🇱 POLAND	4	25.0%	1.00
38	K.Austad	🇳🇴 NORWAY	4	25.0%	1.25

Defensive accuracy↑ top

How often the defenders held declarer to the double-dummy makeable (or fewer) — charged to both defenders on the board. Players with few boards are greyed. Click a column header to sort; filter by name or team.

#	Player	Team	Boards	On target	Conceded
1	A.Bukat	🇵🇱 POLAND	26	96.2%	0.04
2	M.Klimiuk	🇵🇱 POLAND	26	96.2%	0.04
3	D.Balof	🇺🇸 USA2	37	89.2%	0.11
4	E.Derman	🇺🇸 USA2	37	89.2%	0.11
5	A.Pedmanson	🇪🇪 ESTONIA	59	84.7%	0.15
6	J.Vahk	🇪🇪 ESTONIA	59	84.7%	0.15
7	J.Boge	🇺🇸 USA2	32	84.4%	0.16
8	A.Silverstein	🇺🇸 USA2	32	84.4%	0.16
9	E.Xiao	🇺🇸 USA1	18	83.3%	0.17
10	J.Xiao	🇺🇸 USA1	18	83.3%	0.17
11	C.Chen	🇺🇸 USA1	31	77.4%	0.39
12	K.Ge	🇺🇸 USA1	31	77.4%	0.39
13	A.Chen	🇺🇸 USA1	8	75.0%	0.25
14	B.Zhang	🇺🇸 USA1	8	75.0%	0.25
15	S.Allas	🇪🇪 ESTONIA	15	73.3%	0.33
16	E.Orma	🇪🇪 ESTONIA	15	73.3%	0.33
17	S.Grabala	🇵🇱 POLAND	9	66.7%	0.44
18	J.Luczeczko	🇵🇱 POLAND	9	66.7%	0.44
19	A.Kovacs	🇭🇺 HUNGARY	3	100.0%	0.00
20	D.Tokes	🇭🇺 HUNGARY	3	100.0%	0.00
21	K.Austad	🇳🇴 NORWAY	17	94.1%	0.06
22	E.Osen	🇳🇴 NORWAY	17	94.1%	0.06
23	D.Chen	🇹🇼 CHINESE TAIPEI	16	93.8%	0.12
24	Z.Lai	🇹🇼 CHINESE TAIPEI	16	93.8%	0.12
25	J.Brekke	🇳🇴 NORWAY	9	88.9%	0.33
26	S.Lillejord	🇳🇴 NORWAY	9	88.9%	0.33
27	S.Chen	🇨🇳 CHINA	7	85.7%	0.14
28	Z.Yuan	🇨🇳 CHINA	7	85.7%	0.14
29	C.Lu	🇹🇼 CHINESE TAIPEI	7	85.7%	0.14
30	C.Peng	🇹🇼 CHINESE TAIPEI	7	85.7%	0.14
31	B.Biborka	🇭🇺 HUNGARY	6	83.3%	0.17
32	M.Juhasz-Molnar	🇭🇺 HUNGARY	6	83.3%	0.17
33	G.Szabo	🇭🇺 HUNGARY	5	80.0%	0.20
34	Z.Zabradi	🇭🇺 HUNGARY	5	80.0%	0.20
35	X.Tang	🇨🇳 CHINA	11	72.7%	0.36
36	Z.Zhang	🇨🇳 CHINA	11	72.7%	0.36
37	K.Kisielewski	🇵🇱 POLAND	20	70.0%	0.30
38	J.Michalski	🇵🇱 POLAND	20	70.0%	0.30

Bidding activity↑ top

Share of a player’s bids that were not a pass — contract bids, doubles and redoubles, over every auction they sat in. High = active, low = quiet. Players with few boards are greyed. Click a column header to sort; filter by name or team.

#	Player	Team	Bids	Not pass	Active %
1	E.Xiao	🇺🇸 USA1	239	122	51.0%
2	J.Xiao	🇺🇸 USA1	246	122	49.6%
3	A.Chen	🇺🇸 USA1	231	114	49.4%
4	B.Zhang	🇺🇸 USA1	229	113	49.3%
5	J.Luczeczko	🇵🇱 POLAND	228	105	46.1%
6	J.Vahk	🇪🇪 ESTONIA	363	167	46.0%
7	A.Bukat	🇵🇱 POLAND	349	160	45.8%
8	E.Derman	🇺🇸 USA2	351	160	45.6%
9	A.Pedmanson	🇪🇪 ESTONIA	365	166	45.5%
10	D.Balof	🇺🇸 USA2	354	152	42.9%
11	M.Klimiuk	🇵🇱 POLAND	350	150	42.9%
12	E.Orma	🇪🇪 ESTONIA	321	135	42.1%
13	S.Grabala	🇵🇱 POLAND	227	94	41.4%
14	S.Allas	🇪🇪 ESTONIA	322	132	41.0%
15	C.Chen	🇺🇸 USA1	235	86	36.6%
16	J.Boge	🇺🇸 USA2	357	129	36.1%
17	A.Silverstein	🇺🇸 USA2	361	126	34.9%
18	K.Ge	🇺🇸 USA1	231	77	33.3%
19	X.Tang	🇨🇳 CHINA	76	49	64.5%
20	M.Moe	🇳🇴 NORWAY	30	16	53.3%
21	I.Mathisen	🇳🇴 NORWAY	32	17	53.1%
22	G.Szabo	🇭🇺 HUNGARY	36	19	52.8%
23	Z.Zhang	🇨🇳 CHINA	82	43	52.4%
24	Z.Zabradi	🇭🇺 HUNGARY	33	17	51.5%
25	Z.Yuan	🇨🇳 CHINA	76	36	47.4%
26	C.Lu	🇹🇼 CHINESE TAIPEI	72	34	47.2%
27	S.Chen	🇨🇳 CHINA	80	37	46.2%
28	D.Tokes	🇭🇺 HUNGARY	105	45	42.9%
29	A.Kovacs	🇭🇺 HUNGARY	109	45	41.3%
30	C.Chan	🇹🇼 CHINESE TAIPEI	69	28	40.6%
31	C.Peng	🇹🇼 CHINESE TAIPEI	70	28	40.0%
32	Y.Cheng	🇹🇼 CHINESE TAIPEI	71	28	39.4%
33	E.Osen	🇳🇴 NORWAY	114	44	38.6%
34	D.Chen	🇹🇼 CHINESE TAIPEI	89	34	38.2%
35	B.Biborka	🇭🇺 HUNGARY	76	29	38.2%
36	K.Austad	🇳🇴 NORWAY	114	42	36.8%
37	M.Juhasz-Molnar	🇭🇺 HUNGARY	76	28	36.8%
38	J.Brekke	🇳🇴 NORWAY	68	24	35.3%
39	S.Lillejord	🇳🇴 NORWAY	69	24	34.8%
40	Z.Lai	🇹🇼 CHINESE TAIPEI	91	31	34.1%
41	H.Yu	🇨🇳 CHINA	75	23	30.7%
42	H.Wang	🇨🇳 CHINA	73	22	30.1%
43	K.Kisielewski	🇵🇱 POLAND	106	29	27.4%
44	J.Michalski	🇵🇱 POLAND	112	30	26.8%

Strength of schedule — opponent-adjusted Butler↑ top

On every board a player meets a specific opposing pair, and strong opponents defend and bid well — which quietly depresses your cross-IMP. Opp /bd is the mean cumulative Butler of the pairs faced, i.e. the strength of the draw (+ tough, − easy). Adj /bd adds it back — a tough draw is credited, an easy one discounted — and Δ is the resulting move against the raw Butler order. Regulars only (≥ 40% of the boards). Click a column header to sort; filter by name or team.

#	Player	Team	Boards	Opp /bd	Raw /bd	Adj /bd	Δ
1	S.Grabala	🇵🇱 POLAND	84	-0.23	+1.01	+0.77	·
2	J.Luczeczko	🇵🇱 POLAND	84	-0.23	+1.01	+0.77	·
3	D.Balof	🇺🇸 USA2	126	+0.46	+0.31	+0.77	▲10
4	E.Derman	🇺🇸 USA2	126	+0.46	+0.31	+0.77	▲10
5	A.Bukat	🇵🇱 POLAND	126	+0.05	+0.50	+0.54	·
6	M.Klimiuk	🇵🇱 POLAND	126	+0.05	+0.50	+0.54	·
7	A.Pedmanson	🇪🇪 ESTONIA	126	+0.15	+0.32	+0.46	▲4
8	J.Vahk	🇪🇪 ESTONIA	126	+0.15	+0.32	+0.46	▲4
9	A.Chen	🇺🇸 USA1	84	-0.49	+0.54	+0.05	▼6
10	B.Zhang	🇺🇸 USA1	84	-0.49	+0.54	+0.05	▼6
11	C.Chen	🇺🇸 USA1	84	-0.61	+0.49	-0.12	▼4
12	K.Ge	🇺🇸 USA1	84	-0.61	+0.49	-0.12	▼4
13	S.Allas	🇪🇪 ESTONIA	126	+0.28	-0.42	-0.14	▲2
14	E.Orma	🇪🇪 ESTONIA	126	+0.28	-0.42	-0.14	▲2
15	J.Boge	🇺🇸 USA2	126	+0.24	-0.52	-0.28	▲2
16	A.Silverstein	🇺🇸 USA2	126	+0.24	-0.52	-0.28	▲2
17	E.Xiao	🇺🇸 USA1	84	-0.62	+0.32	-0.30	▼8
18	J.Xiao	🇺🇸 USA1	84	-0.62	+0.32	-0.30	▼8

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Statistics

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