Chennai 2015 — 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	Z.Mahmood	🇺🇸 USA1	272	+0.53	+144.0
2	M.Rosenberg	🇺🇸 USA1	272	+0.53	+144.0
3	A.Kowalski	🇵🇱 POLAND	256	+0.43	+110.0
4	J.Romanski	🇵🇱 POLAND	256	+0.43	+110.0
5	G.Sellden	🇸🇪 SWEDEN	144	+0.28	+40.0
6	B.Wenneberg	🇸🇪 SWEDEN	144	+0.28	+40.0
7	D.Clerkin	🇺🇸 USA2	208	+0.26	+55.0
8	J.Clerkin	🇺🇸 USA2	208	+0.26	+55.0
9	B.Hamman	🇺🇸 USA1	192	+0.06	+11.0
10	M.Lair	🇺🇸 USA1	192	+0.06	+11.0
11	K.Lasocki	🇵🇱 POLAND	192	-0.06	-11.0
12	J.Russyan	🇵🇱 POLAND	192	-0.06	-11.0
13	S.Bjerregard	🇸🇪 SWEDEN	208	-0.16	-33.0
14	A.Morath	🇸🇪 SWEDEN	208	-0.16	-33.0
15	J.Aker	🇺🇸 USA2	160	-0.24	-38.0
16	D.Simson	🇺🇸 USA2	160	-0.24	-38.0
17	P.Eliasson	🇸🇪 SWEDEN	224	-0.33	-75.0
18	J.Ostberg	🇸🇪 SWEDEN	224	-0.33	-75.0
19	M.Tolliver	🇺🇸 USA2	176	-0.57	-100.0
20	M.Zwerling	🇺🇸 USA2	176	-0.57	-100.0
21	T.Brown	🇦🇺 AUSTRALIA	64	+1.22	+78.0
22	A.Kanetkar	🇦🇺 AUSTRALIA	64	+1.22	+78.0
23	H.Lall	🇺🇸 USA1	112	+0.72	+81.0
24	R.Milner	🇺🇸 USA1	112	+0.72	+81.0
25	P.Hackett	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	32	+0.22	+7.0
26	D.Mossop	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	32	+0.22	+7.0
27	N.Fitzgibbon	🇮🇪 IRELAND	80	+0.20	+16.0
28	A.Mesbur	🇮🇪 IRELAND	80	+0.20	+16.0
29	H.Maesel	🇳🇴 NORWAY	64	+0.14	+9.0
30	R.Maesel	🇳🇴 NORWAY	64	+0.14	+9.0
31	D.Price	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	64	+0.03	+2.0
32	C.Simpson	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	64	+0.03	+2.0
33	R.Anderssen	🇳🇴 NORWAY	64	-0.19	-12.0
34	P.Marstrander	🇳🇴 NORWAY	64	-0.19	-12.0
35	G.Hallberg	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	96	-0.20	-19.0
36	J.Holland	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	96	-0.20	-19.0
37	J.Klukowski	🇵🇱 POLAND	96	-0.27	-26.0
38	V.Markowicz	🇵🇱 POLAND	96	-0.27	-26.0
39	M.O'Briain	🇮🇪 IRELAND	64	-0.42	-27.0
40	P.O'Briain	🇮🇪 IRELAND	64	-0.42	-27.0
41	T.Bakke	🇳🇴 NORWAY	64	-0.66	-42.0
42	A.Farstad	🇳🇴 NORWAY	64	-0.66	-42.0
43	W.Haughie	🇦🇺 AUSTRALIA	64	-0.66	-42.0
44	R.Klinger	🇦🇺 AUSTRALIA	64	-0.66	-42.0
45	R.Anderson	🇮🇪 IRELAND	48	-0.79	-38.0
46	P.Barry	🇮🇪 IRELAND	48	-0.79	-38.0
47	P.Buchen	🇦🇺 AUSTRALIA	64	-1.41	-90.0
48	H.Christie	🇦🇺 AUSTRALIA	64	-1.41	-90.0

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.Clerkin	🇺🇸 USA2	50	88.0%	0.14
2	B.Hamman	🇺🇸 USA1	46	87.0%	0.15
3	B.Wenneberg	🇸🇪 SWEDEN	38	86.8%	0.16
4	D.Simson	🇺🇸 USA2	45	82.2%	0.29
5	J.Russyan	🇵🇱 POLAND	48	81.2%	0.27
6	M.Tolliver	🇺🇸 USA2	39	79.5%	0.23
7	M.Rosenberg	🇺🇸 USA1	47	78.7%	0.23
8	D.Clerkin	🇺🇸 USA2	56	78.6%	0.29
9	A.Kowalski	🇵🇱 POLAND	36	77.8%	0.28
10	S.Bjerregard	🇸🇪 SWEDEN	13	76.9%	0.31
11	P.Eliasson	🇸🇪 SWEDEN	51	76.5%	0.26
12	Z.Mahmood	🇺🇸 USA1	79	75.9%	0.28
13	J.Ostberg	🇸🇪 SWEDEN	56	75.0%	0.29
14	A.Morath	🇸🇪 SWEDEN	86	73.3%	0.38
15	M.Lair	🇺🇸 USA1	56	73.2%	0.29
16	G.Sellden	🇸🇪 SWEDEN	43	72.1%	0.33
17	J.Romanski	🇵🇱 POLAND	92	68.5%	0.46
18	J.Aker	🇺🇸 USA2	37	67.6%	0.35
19	M.Zwerling	🇺🇸 USA2	43	67.4%	0.42
20	K.Lasocki	🇵🇱 POLAND	38	65.8%	0.42
21	A.Farstad	🇳🇴 NORWAY	9	100.0%	0.00
22	R.Anderssen	🇳🇴 NORWAY	11	100.0%	0.00
23	D.Price	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	16	93.8%	0.06
24	N.Fitzgibbon	🇮🇪 IRELAND	24	91.7%	0.12
25	C.Simpson	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	18	88.9%	0.28
26	T.Brown	🇦🇺 AUSTRALIA	16	87.5%	0.12
27	T.Bakke	🇳🇴 NORWAY	16	87.5%	0.19
28	A.Mesbur	🇮🇪 IRELAND	19	84.2%	0.21
29	M.O'Briain	🇮🇪 IRELAND	17	82.4%	0.18
30	P.Barry	🇮🇪 IRELAND	11	81.8%	0.18
31	R.Maesel	🇳🇴 NORWAY	16	81.2%	0.31
32	G.Hallberg	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	21	81.0%	0.24
33	H.Lall	🇺🇸 USA1	47	80.9%	0.26
34	R.Milner	🇺🇸 USA1	10	80.0%	0.20
35	D.Mossop	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	10	80.0%	0.20
36	H.Christie	🇦🇺 AUSTRALIA	15	80.0%	0.20
37	V.Markowicz	🇵🇱 POLAND	28	78.6%	0.32
38	R.Anderson	🇮🇪 IRELAND	17	76.5%	0.29
39	H.Maesel	🇳🇴 NORWAY	25	76.0%	0.28
40	W.Haughie	🇦🇺 AUSTRALIA	36	75.0%	0.25
41	J.Holland	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	18	72.2%	0.28
42	J.Klukowski	🇵🇱 POLAND	25	72.0%	0.28
43	P.Buchen	🇦🇺 AUSTRALIA	14	71.4%	0.29
44	A.Kanetkar	🇦🇺 AUSTRALIA	20	65.0%	0.50
45	P.O'Briain	🇮🇪 IRELAND	11	63.6%	0.55
46	P.Hackett	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	8	62.5%	0.50
47	P.Marstrander	🇳🇴 NORWAY	21	61.9%	0.52

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.Ostberg	🇸🇪 SWEDEN	58	89.7%	0.12
2	K.Lasocki	🇵🇱 POLAND	43	83.7%	0.30
3	Z.Mahmood	🇺🇸 USA1	70	82.9%	0.21
4	J.Clerkin	🇺🇸 USA2	57	80.7%	0.26
5	G.Sellden	🇸🇪 SWEDEN	25	80.0%	0.28
6	A.Kowalski	🇵🇱 POLAND	59	79.7%	0.25
7	J.Romanski	🇵🇱 POLAND	68	79.4%	0.23
8	B.Hamman	🇺🇸 USA1	43	79.1%	0.30
9	M.Rosenberg	🇺🇸 USA1	75	78.7%	0.25
10	D.Clerkin	🇺🇸 USA2	45	77.8%	0.31
11	J.Russyan	🇵🇱 POLAND	62	77.4%	0.31
12	D.Simson	🇺🇸 USA2	32	75.0%	0.25
13	S.Bjerregard	🇸🇪 SWEDEN	92	75.0%	0.29
14	J.Aker	🇺🇸 USA2	45	73.3%	0.29
15	B.Wenneberg	🇸🇪 SWEDEN	37	73.0%	0.32
16	M.Lair	🇺🇸 USA1	46	69.6%	0.43
17	P.Eliasson	🇸🇪 SWEDEN	59	67.8%	0.41
18	M.Tolliver	🇺🇸 USA2	61	67.2%	0.51
19	A.Morath	🇸🇪 SWEDEN	16	62.5%	0.44
20	M.Zwerling	🇺🇸 USA2	31	61.3%	0.55
21	T.Brown	🇦🇺 AUSTRALIA	8	100.0%	0.00
22	A.Kanetkar	🇦🇺 AUSTRALIA	20	85.0%	0.15
23	P.Barry	🇮🇪 IRELAND	13	84.6%	0.31
24	P.Buchen	🇦🇺 AUSTRALIA	18	83.3%	0.22
25	M.O'Briain	🇮🇪 IRELAND	23	82.6%	0.26
26	J.Holland	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	17	82.4%	0.18
27	A.Farstad	🇳🇴 NORWAY	17	82.4%	0.23
28	R.Anderssen	🇳🇴 NORWAY	16	81.2%	0.19
29	P.Marstrander	🇳🇴 NORWAY	16	81.2%	0.19
30	N.Fitzgibbon	🇮🇪 IRELAND	16	81.2%	0.25
31	H.Christie	🇦🇺 AUSTRALIA	17	76.5%	0.23
32	W.Haughie	🇦🇺 AUSTRALIA	28	75.0%	0.29
33	J.Klukowski	🇵🇱 POLAND	24	75.0%	0.29
34	R.Milner	🇺🇸 USA1	14	71.4%	0.29
35	A.Mesbur	🇮🇪 IRELAND	21	71.4%	0.33
36	C.Simpson	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	14	71.4%	0.43
37	H.Lall	🇺🇸 USA1	41	70.7%	0.54
38	G.Hallberg	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	40	70.0%	0.38
39	D.Price	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	15	66.7%	0.33
40	V.Markowicz	🇵🇱 POLAND	18	66.7%	0.50
41	D.Mossop	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	6	66.7%	0.50
42	H.Maesel	🇳🇴 NORWAY	14	64.3%	0.36
43	T.Bakke	🇳🇴 NORWAY	22	63.6%	0.36
44	P.O'Briain	🇮🇪 IRELAND	12	58.3%	0.42
45	R.Anderson	🇮🇪 IRELAND	7	57.1%	0.43
46	R.Maesel	🇳🇴 NORWAY	9	55.6%	0.44
47	P.Hackett	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	8	50.0%	0.50

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	S.Bjerregard	🇸🇪 SWEDEN	99	96.0%	0.05
2	A.Morath	🇸🇪 SWEDEN	99	96.0%	0.05
3	M.Tolliver	🇺🇸 USA2	82	91.5%	0.10
4	M.Zwerling	🇺🇸 USA2	82	91.5%	0.10
5	A.Kowalski	🇵🇱 POLAND	128	89.8%	0.13
6	J.Romanski	🇵🇱 POLAND	128	89.8%	0.13
7	B.Hamman	🇺🇸 USA1	102	89.2%	0.17
8	M.Lair	🇺🇸 USA1	102	89.2%	0.17
9	D.Clerkin	🇺🇸 USA2	106	87.7%	0.15
10	J.Clerkin	🇺🇸 USA2	106	87.7%	0.15
11	Z.Mahmood	🇺🇸 USA1	126	87.3%	0.14
12	M.Rosenberg	🇺🇸 USA1	126	87.3%	0.14
13	K.Lasocki	🇵🇱 POLAND	86	86.0%	0.16
14	J.Russyan	🇵🇱 POLAND	86	86.0%	0.16
15	G.Sellden	🇸🇪 SWEDEN	81	85.2%	0.16
16	B.Wenneberg	🇸🇪 SWEDEN	81	85.2%	0.16
17	P.Eliasson	🇸🇪 SWEDEN	107	81.3%	0.21
18	J.Ostberg	🇸🇪 SWEDEN	107	81.3%	0.21
19	J.Aker	🇺🇸 USA2	82	70.7%	0.41
20	D.Simson	🇺🇸 USA2	82	70.7%	0.41
21	R.Anderson	🇮🇪 IRELAND	28	92.9%	0.07
22	P.Barry	🇮🇪 IRELAND	28	92.9%	0.07
23	J.Klukowski	🇵🇱 POLAND	53	90.6%	0.09
24	V.Markowicz	🇵🇱 POLAND	53	90.6%	0.09
25	T.Bakke	🇳🇴 NORWAY	25	88.0%	0.12
26	A.Farstad	🇳🇴 NORWAY	25	88.0%	0.12
27	H.Lall	🇺🇸 USA1	57	87.7%	0.23
28	R.Milner	🇺🇸 USA1	57	87.7%	0.23
29	G.Hallberg	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	39	87.2%	0.15
30	J.Holland	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	39	87.2%	0.15
31	W.Haughie	🇦🇺 AUSTRALIA	36	86.1%	0.14
32	R.Klinger	🇦🇺 AUSTRALIA	36	86.1%	0.14
33	D.Price	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	34	85.3%	0.18
34	C.Simpson	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	34	85.3%	0.18
35	N.Fitzgibbon	🇮🇪 IRELAND	43	83.7%	0.21
36	A.Mesbur	🇮🇪 IRELAND	43	83.7%	0.21
37	P.Buchen	🇦🇺 AUSTRALIA	29	82.8%	0.28
38	H.Christie	🇦🇺 AUSTRALIA	29	82.8%	0.28
39	R.Anderssen	🇳🇴 NORWAY	32	81.2%	0.22
40	P.Marstrander	🇳🇴 NORWAY	32	81.2%	0.22
41	H.Maesel	🇳🇴 NORWAY	41	75.6%	0.34
42	R.Maesel	🇳🇴 NORWAY	41	75.6%	0.34
43	M.O'Briain	🇮🇪 IRELAND	28	75.0%	0.25
44	P.O'Briain	🇮🇪 IRELAND	28	75.0%	0.25
45	T.Brown	🇦🇺 AUSTRALIA	36	75.0%	0.28
46	A.Kanetkar	🇦🇺 AUSTRALIA	36	75.0%	0.28
47	P.Hackett	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	18	66.7%	0.50
48	D.Mossop	🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND	18	66.7%	0.50

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	Z.Mahmood	🇺🇸 USA1	272	-0.25	+0.83	+0.58	·
2	M.Rosenberg	🇺🇸 USA1	272	-0.25	+0.83	+0.58	·
3	A.Kowalski	🇵🇱 POLAND	256	-0.06	+0.21	+0.15	▲2
4	J.Romanski	🇵🇱 POLAND	256	-0.06	+0.21	+0.15	▲2
5	D.Clerkin	🇺🇸 USA2	208	-0.01	+0.10	+0.09	▲2
6	J.Clerkin	🇺🇸 USA2	208	-0.01	+0.10	+0.09	▲2
7	S.Bjerregard	🇸🇪 SWEDEN	208	+0.12	-0.07	+0.05	▲4
8	A.Morath	🇸🇪 SWEDEN	208	+0.12	-0.07	+0.05	▲4
9	P.Eliasson	🇸🇪 SWEDEN	224	+0.35	-0.38	-0.03	▲6
10	J.Ostberg	🇸🇪 SWEDEN	224	+0.35	-0.38	-0.03	▲6
11	K.Lasocki	🇵🇱 POLAND	192	-0.36	+0.30	-0.06	▼8
12	J.Russyan	🇵🇱 POLAND	192	-0.36	+0.30	-0.06	▼8
13	M.Tolliver	🇺🇸 USA2	176	+0.28	-0.42	-0.15	▲6
14	M.Zwerling	🇺🇸 USA2	176	+0.28	-0.42	-0.15	▲6
15	B.Hamman	🇺🇸 USA1	192	-0.06	-0.11	-0.18	▼2
16	M.Lair	🇺🇸 USA1	192	-0.06	-0.11	-0.18	▼2
17	J.Aker	🇺🇸 USA2	160	+0.20	-0.39	-0.18	·
18	D.Simson	🇺🇸 USA2	160	+0.20	-0.39	-0.18	·
19	G.Sellden	🇸🇪 SWEDEN	144	-0.32	+0.07	-0.24	▼10
20	B.Wenneberg	🇸🇪 SWEDEN	144	-0.32	+0.07	-0.24	▼10

Stages

Statistics