Marrakech 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	J.Kalita	🇨🇭 SWITZERLAND	288	+0.75	+215.0
2	M.Klukowski	🇨🇭 SWITZERLAND	288	+0.75	+215.0
3	A.Versace	🇮🇹 ITALY	224	+0.46	+103.0
4	A.Sementa	🇮🇹 ITALY	208	+0.38	+79.0
5	S.Brink	🇨🇭 SWITZERLAND	144	+0.33	+48.0
6	B.Drijver	🇨🇭 SWITZERLAND	144	+0.33	+48.0
7	J.Grue	🇺🇸 USA2	208	+0.09	+18.0
8	B.Moss	🇺🇸 USA2	208	+0.09	+18.0
9	M.Di Franco	🇮🇹 ITALY	128	+0.05	+7.0
10	A.Manno	🇮🇹 ITALY	128	+0.05	+7.0
11	C.Bakke	🇳🇴 NORWAY	240	+0.04	+9.0
12	B.Brogeland	🇳🇴 NORWAY	240	+0.04	+9.0
13	Z.Mahmood	🇺🇸 USA2	176	+0.01	+1.0
14	J.Meckstroth	🇺🇸 USA2	176	+0.01	+1.0
15	M.Nowosadzki	🇨🇭 SWITZERLAND	144	-0.20	-29.0
16	P.Zimmermann	🇨🇭 SWITZERLAND	144	-0.20	-29.0
17	G.Donati	🇮🇹 ITALY	176	-0.23	-41.0
18	G.Percario	🇮🇹 ITALY	160	-0.41	-65.0
19	T.Grude	🇳🇴 NORWAY	224	-0.47	-106.0
20	G.Helgemo	🇳🇴 NORWAY	224	-0.47	-106.0
21	M.Fleisher	🇺🇸 USA2	128	-0.96	-123.0
22	C.Martel	🇺🇸 USA2	128	-0.96	-123.0
23	J.Liu	🇨🇳 CHINA	80	+0.55	+44.0
24	Z.Zhuang	🇨🇳 CHINA	80	+0.55	+44.0
25	A.Birman	🇮🇱 ISRAEL	96	+0.38	+36.0
26	D.Padon	🇮🇱 ISRAEL	96	+0.38	+36.0
27	V.Demuy	🇺🇸 USA1	80	+0.35	+28.0
28	J.Kranyak	🇺🇸 USA1	80	+0.35	+28.0
29	K.Araszkiewicz	🇵🇱 POLAND	64	+0.27	+17.0
30	K.Kotorowicz	🇵🇱 POLAND	64	+0.27	+17.0
31	T.Aa	🇳🇴 NORWAY	112	+0.22	+25.0
32	A.Livgard	🇳🇴 NORWAY	112	+0.22	+25.0
33	K.Buras	🇵🇱 POLAND	80	+0.12	+10.0
34	P.Lutostanski	🇵🇱 POLAND	80	+0.12	+10.0
35	K.Bathurst	🇺🇸 USA1	64	-0.05	-3.0
36	J.Hurd	🇺🇸 USA1	64	-0.05	-3.0
37	L.Hu	🇨🇳 CHINA	96	-0.43	-41.0
38	Y.Liu	🇨🇳 CHINA	96	-0.43	-41.0
39	C.Ju	🇨🇳 CHINA	16	-0.56	-9.0
40	Z.Shi	🇨🇳 CHINA	16	-0.56	-9.0
41	W.Spector	🇺🇸 USA1	48	-0.69	-33.0
42	G.Wolpert	🇺🇸 USA1	48	-0.69	-33.0
43	A.Levin	🇮🇱 ISRAEL	48	-0.90	-43.0
44	J.Roll	🇮🇱 ISRAEL	48	-0.90	-43.0
45	O.Toledano	🇮🇱 ISRAEL	48	-1.10	-53.0
46	A.Zamir	🇮🇱 ISRAEL	48	-1.10	-53.0
47	W.Gawel	🇵🇱 POLAND	48	-1.17	-56.0
48	R.Jagniewski	🇵🇱 POLAND	48	-1.17	-56.0

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.Kalita	🇨🇭 SWITZERLAND	72	86.1%	0.18
2	J.Meckstroth	🇺🇸 USA2	48	85.4%	0.21
3	C.Bakke	🇳🇴 NORWAY	76	84.2%	0.17
4	C.Martel	🇺🇸 USA2	28	82.1%	0.18
5	M.Di Franco	🇮🇹 ITALY	44	81.8%	0.36
6	S.Brink	🇨🇭 SWITZERLAND	32	81.2%	0.19
7	A.Versace	🇮🇹 ITALY	59	79.7%	0.24
8	G.Donati	🇮🇹 ITALY	38	78.9%	0.24
9	G.Percario	🇮🇹 ITALY	38	78.9%	0.24
10	G.Helgemo	🇳🇴 NORWAY	50	78.0%	0.26
11	J.Grue	🇺🇸 USA2	62	77.4%	0.31
12	B.Moss	🇺🇸 USA2	48	77.1%	0.31
13	T.Grude	🇳🇴 NORWAY	47	76.6%	0.30
14	M.Klukowski	🇨🇭 SWITZERLAND	68	76.5%	0.25
15	B.Brogeland	🇳🇴 NORWAY	63	76.2%	0.25
16	Z.Mahmood	🇺🇸 USA2	41	75.6%	0.29
17	A.Sementa	🇮🇹 ITALY	55	74.5%	0.27
18	P.Zimmermann	🇨🇭 SWITZERLAND	32	71.9%	0.34
19	M.Fleisher	🇺🇸 USA2	28	71.4%	0.29
20	M.Nowosadzki	🇨🇭 SWITZERLAND	37	70.3%	0.35
21	B.Drijver	🇨🇭 SWITZERLAND	43	69.8%	0.35
22	A.Manno	🇮🇹 ITALY	25	60.0%	0.44
23	J.Hurd	🇺🇸 USA1	13	92.3%	0.08
24	P.Lutostanski	🇵🇱 POLAND	12	91.7%	0.08
25	Z.Zhuang	🇨🇳 CHINA	21	90.5%	0.10
26	D.Padon	🇮🇱 ISRAEL	21	90.5%	0.10
27	T.Aa	🇳🇴 NORWAY	26	88.5%	0.12
28	W.Spector	🇺🇸 USA1	14	85.7%	0.29
29	J.Kranyak	🇺🇸 USA1	26	84.6%	0.15
30	A.Birman	🇮🇱 ISRAEL	26	84.6%	0.23
31	K.Araszkiewicz	🇵🇱 POLAND	19	84.2%	0.16
32	Y.Liu	🇨🇳 CHINA	18	83.3%	0.17
33	K.Buras	🇵🇱 POLAND	24	83.3%	0.29
34	A.Levin	🇮🇱 ISRAEL	11	81.8%	0.18
35	V.Demuy	🇺🇸 USA1	15	80.0%	0.20
36	L.Hu	🇨🇳 CHINA	25	80.0%	0.20
37	O.Toledano	🇮🇱 ISRAEL	10	80.0%	0.30
38	A.Livgard	🇳🇴 NORWAY	27	77.8%	0.26
39	J.Roll	🇮🇱 ISRAEL	17	76.5%	0.29
40	R.Jagniewski	🇵🇱 POLAND	15	73.3%	0.27
41	K.Kotorowicz	🇵🇱 POLAND	15	73.3%	0.47
42	W.Gawel	🇵🇱 POLAND	11	72.7%	0.27
43	A.Zamir	🇮🇱 ISRAEL	14	71.4%	0.29
44	K.Bathurst	🇺🇸 USA1	19	68.4%	0.32
45	J.Liu	🇨🇳 CHINA	18	66.7%	0.33
46	G.Wolpert	🇺🇸 USA1	12	66.7%	0.33
47	Z.Shi	🇨🇳 CHINA	3	66.7%	0.33
48	C.Ju	🇨🇳 CHINA	4	50.0%	0.50

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	J.Grue	🇺🇸 USA2	49	83.7%	0.18
2	M.Nowosadzki	🇨🇭 SWITZERLAND	40	82.5%	0.20
3	M.Di Franco	🇮🇹 ITALY	33	81.8%	0.30
4	A.Manno	🇮🇹 ITALY	26	80.8%	0.23
5	M.Klukowski	🇨🇭 SWITZERLAND	82	79.3%	0.27
6	J.Meckstroth	🇺🇸 USA2	48	79.2%	0.21
7	J.Kalita	🇨🇭 SWITZERLAND	66	78.8%	0.24
8	C.Bakke	🇳🇴 NORWAY	47	78.7%	0.26
9	S.Brink	🇨🇭 SWITZERLAND	36	77.8%	0.25
10	C.Martel	🇺🇸 USA2	39	76.9%	0.31
11	B.Brogeland	🇳🇴 NORWAY	54	75.9%	0.32
12	B.Drijver	🇨🇭 SWITZERLAND	33	75.8%	0.24
13	T.Grude	🇳🇴 NORWAY	73	75.3%	0.29
14	A.Versace	🇮🇹 ITALY	68	75.0%	0.29
15	G.Percario	🇮🇹 ITALY	36	75.0%	0.33
16	G.Helgemo	🇳🇴 NORWAY	54	70.4%	0.48
17	M.Fleisher	🇺🇸 USA2	33	69.7%	0.39
18	A.Sementa	🇮🇹 ITALY	35	68.6%	0.37
19	Z.Mahmood	🇺🇸 USA2	37	67.6%	0.51
20	G.Donati	🇮🇹 ITALY	55	67.3%	0.34
21	B.Moss	🇺🇸 USA2	49	65.3%	0.47
22	P.Zimmermann	🇨🇭 SWITZERLAND	34	47.1%	0.71
23	W.Spector	🇺🇸 USA1	12	91.7%	0.08
24	O.Toledano	🇮🇱 ISRAEL	10	90.0%	0.20
25	J.Hurd	🇺🇸 USA1	18	83.3%	0.17
26	Z.Shi	🇨🇳 CHINA	6	83.3%	0.17
27	W.Gawel	🇵🇱 POLAND	11	81.8%	0.18
28	K.Buras	🇵🇱 POLAND	27	81.5%	0.18
29	A.Birman	🇮🇱 ISRAEL	26	80.8%	0.19
30	Z.Zhuang	🇨🇳 CHINA	18	77.8%	0.28
31	T.Aa	🇳🇴 NORWAY	31	77.4%	0.32
32	Y.Liu	🇨🇳 CHINA	26	76.9%	0.23
33	V.Demuy	🇺🇸 USA1	26	76.9%	0.31
34	J.Roll	🇮🇱 ISRAEL	12	75.0%	0.25
35	L.Hu	🇨🇳 CHINA	27	74.1%	0.33
36	J.Liu	🇨🇳 CHINA	23	73.9%	0.35
37	D.Padon	🇮🇱 ISRAEL	23	69.6%	0.35
38	K.Kotorowicz	🇵🇱 POLAND	18	66.7%	0.33
39	C.Ju	🇨🇳 CHINA	3	66.7%	0.33
40	J.Kranyak	🇺🇸 USA1	12	66.7%	0.42
41	K.Araszkiewicz	🇵🇱 POLAND	12	66.7%	0.42
42	P.Lutostanski	🇵🇱 POLAND	17	64.7%	0.53
43	K.Bathurst	🇺🇸 USA1	14	64.3%	0.43
44	A.Zamir	🇮🇱 ISRAEL	14	57.1%	0.57
45	R.Jagniewski	🇵🇱 POLAND	11	54.5%	0.64
46	A.Livgard	🇳🇴 NORWAY	28	53.6%	0.64
47	A.Levin	🇮🇱 ISRAEL	8	50.0%	0.50
48	G.Wolpert	🇺🇸 USA1	10	20.0%	1.00

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	T.Grude	🇳🇴 NORWAY	97	92.8%	0.09
2	G.Helgemo	🇳🇴 NORWAY	97	92.8%	0.09
3	J.Kalita	🇨🇭 SWITZERLAND	140	92.1%	0.09
4	M.Klukowski	🇨🇭 SWITZERLAND	140	92.1%	0.09
5	S.Brink	🇨🇭 SWITZERLAND	75	92.0%	0.09
6	B.Drijver	🇨🇭 SWITZERLAND	75	92.0%	0.09
7	M.Di Franco	🇮🇹 ITALY	69	91.3%	0.09
8	A.Manno	🇮🇹 ITALY	69	91.3%	0.09
9	A.Versace	🇮🇹 ITALY	119	90.8%	0.12
10	A.Sementa	🇮🇹 ITALY	107	90.7%	0.12
11	Z.Mahmood	🇺🇸 USA2	89	89.9%	0.10
12	J.Meckstroth	🇺🇸 USA2	89	89.9%	0.10
13	G.Donati	🇮🇹 ITALY	83	89.2%	0.13
14	G.Percario	🇮🇹 ITALY	71	88.7%	0.14
15	C.Bakke	🇳🇴 NORWAY	139	87.8%	0.13
16	B.Brogeland	🇳🇴 NORWAY	139	87.8%	0.13
17	J.Grue	🇺🇸 USA2	110	86.4%	0.14
18	B.Moss	🇺🇸 USA2	110	86.4%	0.14
19	M.Fleisher	🇺🇸 USA2	56	85.7%	0.23
20	C.Martel	🇺🇸 USA2	56	85.7%	0.23
21	M.Nowosadzki	🇨🇭 SWITZERLAND	69	85.5%	0.16
22	P.Zimmermann	🇨🇭 SWITZERLAND	69	85.5%	0.16
23	A.Levin	🇮🇱 ISRAEL	28	100.0%	0.00
24	J.Roll	🇮🇱 ISRAEL	28	100.0%	0.00
25	O.Toledano	🇮🇱 ISRAEL	24	95.8%	0.04
26	A.Zamir	🇮🇱 ISRAEL	24	95.8%	0.04
27	L.Hu	🇨🇳 CHINA	43	95.3%	0.07
28	Y.Liu	🇨🇳 CHINA	43	95.3%	0.07
29	K.Buras	🇵🇱 POLAND	36	94.4%	0.06
30	P.Lutostanski	🇵🇱 POLAND	36	94.4%	0.06
31	W.Gawel	🇵🇱 POLAND	26	92.3%	0.08
32	R.Jagniewski	🇵🇱 POLAND	26	92.3%	0.08
33	K.Araszkiewicz	🇵🇱 POLAND	34	91.2%	0.09
34	K.Kotorowicz	🇵🇱 POLAND	34	91.2%	0.09
35	V.Demuy	🇺🇸 USA1	41	90.2%	0.10
36	J.Kranyak	🇺🇸 USA1	41	90.2%	0.10
37	T.Aa	🇳🇴 NORWAY	53	88.7%	0.13
38	A.Livgard	🇳🇴 NORWAY	53	88.7%	0.13
39	K.Bathurst	🇺🇸 USA1	32	87.5%	0.16
40	J.Hurd	🇺🇸 USA1	32	87.5%	0.16
41	A.Birman	🇮🇱 ISRAEL	47	87.2%	0.13
42	D.Padon	🇮🇱 ISRAEL	47	87.2%	0.13
43	J.Liu	🇨🇳 CHINA	39	84.6%	0.15
44	Z.Zhuang	🇨🇳 CHINA	39	84.6%	0.15
45	W.Spector	🇺🇸 USA1	26	84.6%	0.15
46	G.Wolpert	🇺🇸 USA1	26	84.6%	0.15
47	C.Ju	🇨🇳 CHINA	7	71.4%	0.29
48	Z.Shi	🇨🇳 CHINA	7	71.4%	0.29

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	G.Percario	🇮🇹 ITALY	491	241	49.1%
2	M.Klukowski	🇨🇭 SWITZERLAND	827	399	48.2%
3	T.Grude	🇳🇴 NORWAY	625	300	48.0%
4	B.Drijver	🇨🇭 SWITZERLAND	428	203	47.4%
5	G.Helgemo	🇳🇴 NORWAY	629	292	46.4%
6	M.Fleisher	🇺🇸 USA2	356	165	46.3%
7	A.Sementa	🇮🇹 ITALY	629	290	46.1%
8	P.Zimmermann	🇨🇭 SWITZERLAND	395	182	46.1%
9	J.Kalita	🇨🇭 SWITZERLAND	832	383	46.0%
10	Z.Mahmood	🇺🇸 USA2	510	234	45.9%
11	M.Nowosadzki	🇨🇭 SWITZERLAND	397	182	45.8%
12	A.Manno	🇮🇹 ITALY	365	167	45.8%
13	C.Martel	🇺🇸 USA2	356	163	45.8%
14	G.Donati	🇮🇹 ITALY	543	248	45.7%
15	S.Brink	🇨🇭 SWITZERLAND	436	194	44.5%
16	A.Versace	🇮🇹 ITALY	687	300	43.7%
17	J.Grue	🇺🇸 USA2	573	250	43.6%
18	C.Bakke	🇳🇴 NORWAY	725	313	43.2%
19	J.Meckstroth	🇺🇸 USA2	515	222	43.1%
20	B.Moss	🇺🇸 USA2	577	243	42.1%
21	M.Di Franco	🇮🇹 ITALY	369	153	41.5%
22	B.Brogeland	🇳🇴 NORWAY	735	303	41.2%
23	Z.Shi	🇨🇳 CHINA	40	24	60.0%
24	J.Kranyak	🇺🇸 USA1	222	109	49.1%
25	J.Hurd	🇺🇸 USA1	179	87	48.6%
26	Z.Zhuang	🇨🇳 CHINA	236	113	47.9%
27	K.Bathurst	🇺🇸 USA1	175	83	47.4%
28	T.Aa	🇳🇴 NORWAY	327	154	47.1%
29	O.Toledano	🇮🇱 ISRAEL	138	65	47.1%
30	L.Hu	🇨🇳 CHINA	274	128	46.7%
31	K.Buras	🇵🇱 POLAND	249	116	46.6%
32	A.Birman	🇮🇱 ISRAEL	275	125	45.5%
33	G.Wolpert	🇺🇸 USA1	121	54	44.6%
34	A.Livgard	🇳🇴 NORWAY	326	144	44.2%
35	J.Liu	🇨🇳 CHINA	237	104	43.9%
36	C.Ju	🇨🇳 CHINA	41	18	43.9%
37	P.Lutostanski	🇵🇱 POLAND	249	109	43.8%
38	R.Jagniewski	🇵🇱 POLAND	144	62	43.1%
39	K.Kotorowicz	🇵🇱 POLAND	200	86	43.0%
40	D.Padon	🇮🇱 ISRAEL	282	121	42.9%
41	Y.Liu	🇨🇳 CHINA	280	119	42.5%
42	K.Araszkiewicz	🇵🇱 POLAND	205	87	42.4%
43	V.Demuy	🇺🇸 USA1	227	96	42.3%
44	W.Gawel	🇵🇱 POLAND	141	58	41.1%
45	J.Roll	🇮🇱 ISRAEL	136	55	40.4%
46	A.Zamir	🇮🇱 ISRAEL	137	54	39.4%
47	W.Spector	🇺🇸 USA1	126	49	38.9%
48	A.Levin	🇮🇱 ISRAEL	138	53	38.4%

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	J.Kalita	🇨🇭 SWITZERLAND	288	-0.21	+0.79	+0.57	·
2	M.Klukowski	🇨🇭 SWITZERLAND	288	-0.21	+0.79	+0.57	·
3	A.Versace	🇮🇹 ITALY	224	-0.22	+0.39	+0.17	·
4	T.Grude	🇳🇴 NORWAY	224	+0.17	-0.01	+0.15	▲7
5	G.Helgemo	🇳🇴 NORWAY	224	+0.17	-0.01	+0.15	▲7
6	Z.Mahmood	🇺🇸 USA2	176	+0.33	-0.20	+0.14	▲7
7	J.Meckstroth	🇺🇸 USA2	176	+0.33	-0.20	+0.14	▲7
8	A.Sementa	🇮🇹 ITALY	208	-0.22	+0.35	+0.13	▼4
9	G.Donati	🇮🇹 ITALY	176	-0.24	+0.20	-0.03	▼4
10	S.Brink	🇨🇭 SWITZERLAND	144	-0.22	+0.17	-0.04	▼4
11	B.Drijver	🇨🇭 SWITZERLAND	144	-0.22	+0.17	-0.04	▼4
12	C.Bakke	🇳🇴 NORWAY	240	+0.33	-0.39	-0.06	▲9
13	B.Brogeland	🇳🇴 NORWAY	240	+0.33	-0.39	-0.06	▲9
14	G.Percario	🇮🇹 ITALY	160	-0.24	+0.13	-0.11	▼4
15	J.Grue	🇺🇸 USA2	208	+0.14	-0.26	-0.12	▲2
16	B.Moss	🇺🇸 USA2	208	+0.14	-0.26	-0.12	▲2
17	M.Nowosadzki	🇨🇭 SWITZERLAND	144	-0.31	+0.17	-0.13	▼9
18	P.Zimmermann	🇨🇭 SWITZERLAND	144	-0.31	+0.17	-0.13	▼9
19	M.Fleisher	🇺🇸 USA2	128	+0.03	-0.38	-0.34	·
20	C.Martel	🇺🇸 USA2	128	+0.03	-0.38	-0.34	·
21	M.Di Franco	🇮🇹 ITALY	128	-0.25	-0.23	-0.49	▼6
22	A.Manno	🇮🇹 ITALY	128	-0.25	-0.23	-0.49	▼6

Stages

Statistics

Tables