Katowice 2026 — 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	K.Dufrat	BAKER	126	+1.52	+192.0
2	J.Zmuda	BAKER	126	+1.52	+192.0
3	D.Kazmucha	CASTOLDI	98	+0.70	+69.0
4	A.Sarniak	CASTOLDI	98	+0.70	+69.0
5	P.Wang	JIANGSU RUNTAI	126	+0.61	+77.0
6	S.Wu	JIANGSU RUNTAI	126	+0.61	+77.0
7	D.Yavas	HUANG	112	+0.27	+30.0
8	I.Ozbay	HUANG	98	+0.24	+24.0
9	A.Acar	HUANG	98	-0.06	-6.0
10	B.Erkan	HUANG	98	-0.06	-6.0
11	L.Baker	BAKER	84	-0.31	-26.0
12	O.Schireson	BAKER	84	-0.31	-26.0
13	X.Zuo	JIANGSU RUNTAI	112	-0.37	-41.0
14	C.Baldysz	CASTOLDI	70	-0.39	-27.0
15	S.Baldysz	CASTOLDI	70	-0.39	-27.0
16	C.Dwyer Rimstedt	BAKER	126	-0.42	-53.0
17	S.Rimstedt	BAKER	126	-0.42	-53.0
18	X.Yuan	JIANGSU RUNTAI	84	-0.58	-49.0
19	H.Koo	HONG KONG LADIES	14	+1.79	+25.0
20	S.Li	HONG KONG LADIES	14	+1.79	+25.0
21	J.Seamon-Molson	ZHANG	42	+1.31	+55.0
22	S.Shi	ZHANG	42	+1.31	+55.0
23	W.Wang	ZHANG	28	+0.68	+19.0
24	S.Zhang	ZHANG	28	+0.68	+19.0
25	S.Blank	CANADA	28	+0.54	+15.0
26	S.Culham	CANADA	28	+0.54	+15.0
27	Y.Cao	CANADA	56	+0.46	+26.0
28	J.Gong	CANADA	56	+0.46	+26.0
29	N.Huang	HUANG	28	-0.07	-2.0
30	P.Shao	JIANGSU RUNTAI	56	-0.11	-6.0
31	M.Pilipovic	ACE	56	-0.30	-17.0
32	N.Sver	ACE	56	-0.30	-17.0
33	L.Castoldi	CASTOLDI	56	-0.39	-22.0
34	A.Fuglestad	CASTOLDI	56	-0.39	-22.0
35	E.Ates	HUANG	14	-0.57	-8.0
36	S.Brock	ACE	56	-0.62	-35.0
37	J.Smederevac	ACE	56	-0.62	-35.0
38	I.Gronkvist	ZHANG	42	-2.19	-92.0
39	J.Wolpert	ZHANG	42	-2.19	-92.0
40	B.Bryant	CANADA	28	-3.29	-92.0
41	M.Decelles-Brentnall	CANADA	28	-3.29	-92.0
42	P.Ling	HONG KONG LADIES	14	-5.86	-82.0
43	T.Tang	HONG KONG LADIES	14	-5.86	-82.0

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	B.Erkan	HUANG	23	95.7%	0.04
2	P.Wang	JIANGSU RUNTAI	26	92.3%	0.08
3	L.Baker	BAKER	22	90.9%	0.14
4	S.Rimstedt	BAKER	31	90.3%	0.13
5	X.Yuan	JIANGSU RUNTAI	21	85.7%	0.29
6	S.Baldysz	CASTOLDI	13	84.6%	0.15
7	D.Kazmucha	CASTOLDI	29	82.8%	0.28
8	X.Zuo	JIANGSU RUNTAI	26	80.8%	0.23
9	O.Schireson	BAKER	19	78.9%	0.26
10	I.Ozbay	HUANG	17	76.5%	0.29
11	K.Dufrat	BAKER	29	75.9%	0.24
12	S.Wu	JIANGSU RUNTAI	39	74.4%	0.33
13	D.Yavas	HUANG	27	74.1%	0.30
14	J.Zmuda	BAKER	34	73.5%	0.47
15	A.Sarniak	CASTOLDI	25	72.0%	0.36
16	C.Baldysz	CASTOLDI	17	70.6%	0.35
17	A.Acar	HUANG	26	65.4%	0.46
18	C.Dwyer Rimstedt	BAKER	30	56.7%	0.57
19	S.Zhang	ZHANG	7	100.0%	0.00
20	S.Li	HONG KONG LADIES	5	100.0%	0.00
21	B.Bryant	CANADA	8	100.0%	0.00
22	P.Ling	HONG KONG LADIES	3	100.0%	0.00
23	M.Pilipovic	ACE	16	93.8%	0.06
24	J.Wolpert	ZHANG	13	92.3%	0.15
25	N.Huang	HUANG	9	88.9%	0.11
26	S.Brock	ACE	18	83.3%	0.33
27	L.Castoldi	CASTOLDI	17	82.4%	0.18
28	S.Culham	CANADA	11	81.8%	0.18
29	E.Ates	HUANG	5	80.0%	0.20
30	M.Decelles-Brentnall	CANADA	5	80.0%	0.20
31	J.Gong	CANADA	9	77.8%	0.22
32	A.Fuglestad	CASTOLDI	13	76.9%	0.23
33	J.Smederevac	ACE	12	75.0%	0.25
34	S.Blank	CANADA	8	75.0%	0.25
35	H.Koo	HONG KONG LADIES	4	75.0%	0.25
36	J.Seamon-Molson	ZHANG	12	75.0%	0.33
37	N.Sver	ACE	15	73.3%	0.27
38	S.Shi	ZHANG	7	71.4%	0.29
39	W.Wang	ZHANG	6	66.7%	0.67
40	P.Shao	JIANGSU RUNTAI	16	62.5%	0.50
41	Y.Cao	CANADA	15	60.0%	0.40
42	I.Gronkvist	ZHANG	9	55.6%	0.44
43	T.Tang	HONG KONG LADIES	1	0.0%	1.00

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	D.Kazmucha	CASTOLDI	29	93.1%	0.10
2	J.Zmuda	BAKER	30	90.0%	0.20
3	A.Acar	HUANG	23	87.0%	0.13
4	P.Wang	JIANGSU RUNTAI	27	85.2%	0.15
5	C.Dwyer Rimstedt	BAKER	35	82.9%	0.26
6	K.Dufrat	BAKER	33	81.8%	0.21
7	I.Ozbay	HUANG	21	81.0%	0.19
8	A.Sarniak	CASTOLDI	15	80.0%	0.27
9	O.Schireson	BAKER	24	79.2%	0.25
10	S.Baldysz	CASTOLDI	20	75.0%	0.35
11	D.Yavas	HUANG	36	75.0%	0.36
12	X.Yuan	JIANGSU RUNTAI	19	73.7%	0.26
13	X.Zuo	JIANGSU RUNTAI	30	73.3%	0.40
14	S.Wu	JIANGSU RUNTAI	33	72.7%	0.33
15	L.Baker	BAKER	18	72.2%	0.28
16	C.Baldysz	CASTOLDI	20	70.0%	0.35
17	S.Rimstedt	BAKER	30	66.7%	0.37
18	B.Erkan	HUANG	26	61.5%	0.42
19	J.Smederevac	ACE	13	100.0%	0.00
20	H.Koo	HONG KONG LADIES	2	100.0%	0.00
21	S.Li	HONG KONG LADIES	3	100.0%	0.00
22	P.Ling	HONG KONG LADIES	4	100.0%	0.00
23	P.Shao	JIANGSU RUNTAI	14	92.9%	0.07
24	I.Gronkvist	ZHANG	10	90.0%	0.10
25	J.Wolpert	ZHANG	10	90.0%	0.10
26	M.Decelles-Brentnall	CANADA	8	87.5%	0.25
27	E.Ates	HUANG	6	83.3%	0.17
28	S.Blank	CANADA	6	83.3%	0.17
29	Y.Cao	CANADA	18	83.3%	0.28
30	M.Pilipovic	ACE	11	81.8%	0.18
31	A.Fuglestad	CASTOLDI	15	80.0%	0.27
32	J.Gong	CANADA	14	78.6%	0.21
33	S.Shi	ZHANG	13	76.9%	0.23
34	W.Wang	ZHANG	7	71.4%	0.43
35	N.Sver	ACE	14	71.4%	0.43
36	B.Bryant	CANADA	7	71.4%	0.86
37	J.Seamon-Molson	ZHANG	10	70.0%	0.40
38	L.Castoldi	CASTOLDI	10	70.0%	0.60
39	S.Brock	ACE	13	69.2%	0.61
40	S.Culham	CANADA	3	66.7%	0.33
41	S.Zhang	ZHANG	8	62.5%	0.38
42	T.Tang	HONG KONG LADIES	6	50.0%	0.67
43	N.Huang	HUANG	4	50.0%	0.75

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	C.Baldysz	CASTOLDI	30	93.3%	0.17
2	S.Baldysz	CASTOLDI	30	93.3%	0.17
3	K.Dufrat	BAKER	63	90.5%	0.13
4	J.Zmuda	BAKER	63	90.5%	0.13
5	C.Dwyer Rimstedt	BAKER	61	90.2%	0.16
6	S.Rimstedt	BAKER	61	90.2%	0.16
7	P.Wang	JIANGSU RUNTAI	65	89.2%	0.12
8	S.Wu	JIANGSU RUNTAI	65	89.2%	0.12
9	D.Kazmucha	CASTOLDI	54	88.9%	0.11
10	A.Sarniak	CASTOLDI	54	88.9%	0.11
11	I.Ozbay	HUANG	44	86.4%	0.14
12	D.Yavas	HUANG	51	84.3%	0.16
13	L.Baker	BAKER	41	82.9%	0.22
14	O.Schireson	BAKER	41	82.9%	0.22
15	A.Acar	HUANG	49	79.6%	0.24
16	B.Erkan	HUANG	49	79.6%	0.24
17	X.Yuan	JIANGSU RUNTAI	40	77.5%	0.23
18	X.Zuo	JIANGSU RUNTAI	59	72.9%	0.30
19	J.Seamon-Molson	ZHANG	19	100.0%	0.00
20	S.Shi	ZHANG	19	100.0%	0.00
21	P.Ling	HONG KONG LADIES	4	100.0%	0.00
22	T.Tang	HONG KONG LADIES	4	100.0%	0.00
23	M.Pilipovic	ACE	31	96.8%	0.03
24	N.Sver	ACE	31	96.8%	0.03
25	L.Castoldi	CASTOLDI	30	90.0%	0.10
26	A.Fuglestad	CASTOLDI	30	90.0%	0.10
27	H.Koo	HONG KONG LADIES	9	88.9%	0.11
28	S.Li	HONG KONG LADIES	9	88.9%	0.11
29	I.Gronkvist	ZHANG	22	86.4%	0.14
30	J.Wolpert	ZHANG	22	86.4%	0.14
31	E.Ates	HUANG	7	85.7%	0.14
32	W.Wang	ZHANG	13	84.6%	0.15
33	S.Zhang	ZHANG	13	84.6%	0.15
34	B.Bryant	CANADA	13	84.6%	0.15
35	M.Decelles-Brentnall	CANADA	13	84.6%	0.15
36	Y.Cao	CANADA	24	79.2%	0.21
37	J.Gong	CANADA	24	79.2%	0.21
38	S.Blank	CANADA	19	78.9%	0.26
39	S.Culham	CANADA	19	78.9%	0.26
40	N.Huang	HUANG	14	78.6%	0.21
41	S.Brock	ACE	30	76.7%	0.30
42	J.Smederevac	ACE	30	76.7%	0.30
43	P.Shao	JIANGSU RUNTAI	27	66.7%	0.41

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	C.Dwyer Rimstedt	BAKER	349	174	49.9%
2	O.Schireson	BAKER	237	118	49.8%
3	L.Baker	BAKER	234	115	49.1%
4	S.Rimstedt	BAKER	350	169	48.3%
5	S.Baldysz	CASTOLDI	190	90	47.4%
6	X.Yuan	JIANGSU RUNTAI	240	113	47.1%
7	X.Zuo	JIANGSU RUNTAI	323	148	45.8%
8	I.Ozbay	HUANG	269	122	45.4%
9	J.Zmuda	BAKER	347	152	43.8%
10	D.Yavas	HUANG	310	133	42.9%
11	K.Dufrat	BAKER	371	157	42.3%
12	A.Acar	HUANG	279	118	42.3%
13	C.Baldysz	CASTOLDI	192	81	42.2%
14	S.Wu	JIANGSU RUNTAI	359	141	39.3%
15	P.Wang	JIANGSU RUNTAI	357	137	38.4%
16	D.Kazmucha	CASTOLDI	266	102	38.3%
17	B.Erkan	HUANG	284	108	38.0%
18	A.Sarniak	CASTOLDI	268	100	37.3%
19	P.Ling	HONG KONG LADIES	34	22	64.7%
20	T.Tang	HONG KONG LADIES	34	21	61.8%
21	B.Bryant	CANADA	69	36	52.2%
22	Y.Cao	CANADA	140	73	52.1%
23	N.Sver	ACE	152	79	52.0%
24	I.Gronkvist	ZHANG	114	58	50.9%
25	J.Wolpert	ZHANG	112	57	50.9%
26	A.Fuglestad	CASTOLDI	152	75	49.3%
27	M.Pilipovic	ACE	156	73	46.8%
28	M.Decelles-Brentnall	CANADA	75	35	46.7%
29	J.Gong	CANADA	146	68	46.6%
30	J.Seamon-Molson	ZHANG	103	48	46.6%
31	P.Shao	JIANGSU RUNTAI	161	70	43.5%
32	S.Shi	ZHANG	108	45	41.7%
33	L.Castoldi	CASTOLDI	152	63	41.4%
34	S.Brock	ACE	147	58	39.5%
35	S.Zhang	ZHANG	77	29	37.7%
36	N.Huang	HUANG	76	28	36.8%
37	J.Smederevac	ACE	147	53	36.1%
38	W.Wang	ZHANG	75	27	36.0%
39	E.Ates	HUANG	35	11	31.4%
40	H.Koo	HONG KONG LADIES	40	11	27.5%
41	S.Li	HONG KONG LADIES	40	9	22.5%
42	S.Blank	CANADA	76	17	22.4%
43	S.Culham	CANADA	79	15	19.0%

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	D.Kazmucha	CASTOLDI	98	-0.20	+0.68	+0.48	▲2
2	A.Sarniak	CASTOLDI	98	-0.20	+0.68	+0.48	▲2
3	C.Dwyer Rimstedt	BAKER	126	-0.04	+0.49	+0.45	▲2
4	S.Rimstedt	BAKER	126	-0.04	+0.49	+0.45	▲2
5	K.Dufrat	BAKER	126	-0.39	+0.83	+0.45	▼4
6	J.Zmuda	BAKER	126	-0.39	+0.83	+0.45	▼4
7	X.Yuan	JIANGSU RUNTAI	84	+0.01	+0.39	+0.41	·
8	I.Ozbay	HUANG	98	-0.07	+0.27	+0.21	·
9	X.Zuo	JIANGSU RUNTAI	112	+0.03	+0.13	+0.16	▲2
10	A.Acar	HUANG	98	-0.11	+0.19	+0.08	▼1
11	B.Erkan	HUANG	98	-0.11	+0.19	+0.08	▼1
12	P.Wang	JIANGSU RUNTAI	126	-0.15	-0.01	-0.16	·
13	S.Wu	JIANGSU RUNTAI	126	-0.15	-0.01	-0.16	·
14	L.Baker	BAKER	84	+0.13	-0.31	-0.18	▲3
15	O.Schireson	BAKER	84	+0.13	-0.31	-0.18	▲3
16	C.Baldysz	CASTOLDI	70	-0.14	-0.10	-0.24	▼2
17	S.Baldysz	CASTOLDI	70	-0.14	-0.10	-0.24	▼2
18	D.Yavas	HUANG	112	-0.14	-0.14	-0.28	▼2

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