Atlanta 2013 — 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	O.Kriegel	USA JENG	96	+1.95	+187.0
2	B.Snowden	USA JENG	96	+1.95	+187.0
3	T.Jin	CHINA XNWY	80	+1.19	+95.0
4	Z.Sha	CHINA XNWY	80	+1.19	+95.0
5	B.Harper	KRISTENSEN	96	+0.92	+88.0
6	R.Miller	KRISTENSEN	96	+0.92	+88.0
7	D.Soukup	BERK	80	+0.61	+49.0
8	H.Berk	BERK	96	+0.58	+56.0
9	G.Herman	KRISTENSEN	96	+0.51	+49.0
10	B.Kristensen	KRISTENSEN	96	+0.51	+49.0
11	A.Jeng	USA JENG	96	-0.10	-10.0
12	R.Jeng	USA JENG	96	-0.10	-10.0
13	N.Chang	BERK	64	-0.31	-20.0
14	J.Olsen	BERK	64	-0.83	-53.0
15	S.Amer	BERK	80	-1.02	-82.0
16	K.Jin	CHINA XNWY	80	-1.26	-101.0
17	F.Yu	CHINA XNWY	80	-1.26	-101.0
18	M.Green	BERMAN	32	+1.59	+51.0
19	J.Schwartz	BERMAN	32	+1.59	+51.0
20	H.Li	CHINA WFL	32	+0.97	+31.0
21	S.Liu	CHINA WFL	32	+0.97	+31.0
22	T.Allen	LIN	32	+0.00	+0.0
23	A.Lin	LIN	32	+0.00	+0.0
24	Y.Shen	CHINA XNWY	32	-0.03	-1.0
25	K.Wu	CHINA XNWY	32	-0.03	-1.0
26	L.Cheng	CHINA SX CLUB	32	-1.22	-39.0
27	R.Li	CHINA SX CLUB	32	-1.22	-39.0
28	Y.Liu	CHINA SX CLUB	32	-1.81	-58.0
29	Y.Zhang	CHINA SX CLUB	32	-1.81	-58.0
30	X.Huang	CHINA WFL	32	-1.94	-62.0
31	Y.Shao	CHINA WFL	32	-1.94	-62.0
32	E.Berman	BERMAN	32	-2.75	-88.0
33	A.Ladyzhensky	BERMAN	32	-2.75	-88.0
34	J.Lieberman	LIN	32	-3.66	-117.0
35	C.Welland	LIN	32	-3.66	-117.0

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.Kristensen	KRISTENSEN	27	96.3%	0.04
2	N.Chang	BERK	19	89.5%	0.10
3	B.Harper	KRISTENSEN	27	88.9%	0.11
4	H.Berk	BERK	16	87.5%	0.12
5	K.Jin	CHINA XNWY	16	87.5%	0.12
6	G.Herman	KRISTENSEN	23	87.0%	0.13
7	F.Yu	CHINA XNWY	23	82.6%	0.22
8	R.Miller	KRISTENSEN	21	81.0%	0.19
9	S.Amer	BERK	15	80.0%	0.40
10	O.Kriegel	USA JENG	27	77.8%	0.30
11	A.Jeng	USA JENG	19	73.7%	0.26
12	B.Snowden	USA JENG	26	73.1%	0.31
13	T.Jin	CHINA XNWY	18	72.2%	0.33
14	D.Soukup	BERK	32	71.9%	0.28
15	Z.Sha	CHINA XNWY	23	69.6%	0.52
16	R.Jeng	USA JENG	26	65.4%	0.42
17	J.Olsen	BERK	18	55.6%	0.56
18	Y.Shao	CHINA WFL	1	100.0%	0.00
19	L.Cheng	CHINA SX CLUB	7	100.0%	0.00
20	A.Lin	LIN	10	90.0%	0.10
21	E.Berman	BERMAN	9	88.9%	0.11
22	Y.Liu	CHINA SX CLUB	8	87.5%	0.12
23	Y.Zhang	CHINA SX CLUB	8	87.5%	0.12
24	S.Liu	CHINA WFL	8	87.5%	0.12
25	C.Welland	LIN	8	87.5%	0.12
26	K.Wu	CHINA XNWY	7	85.7%	0.14
27	A.Ladyzhensky	BERMAN	7	85.7%	0.14
28	R.Li	CHINA SX CLUB	6	83.3%	0.17
29	X.Huang	CHINA WFL	9	77.8%	0.33
30	M.Green	BERMAN	8	75.0%	0.25
31	J.Schwartz	BERMAN	8	75.0%	0.25
32	Y.Shen	CHINA XNWY	7	71.4%	0.29
33	H.Li	CHINA WFL	10	70.0%	0.30
34	T.Allen	LIN	9	66.7%	0.33
35	J.Lieberman	LIN	2	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	B.Snowden	USA JENG	19	94.7%	0.05
2	R.Jeng	USA JENG	28	89.3%	0.11
3	Z.Sha	CHINA XNWY	11	81.8%	0.18
4	T.Jin	CHINA XNWY	27	81.5%	0.18
5	S.Amer	BERK	21	81.0%	0.38
6	J.Olsen	BERK	15	80.0%	0.20
7	B.Kristensen	KRISTENSEN	24	79.2%	0.21
8	A.Jeng	USA JENG	23	78.3%	0.30
9	D.Soukup	BERK	13	76.9%	0.39
10	N.Chang	BERK	18	72.2%	0.39
11	G.Herman	KRISTENSEN	21	71.4%	0.48
12	K.Jin	CHINA XNWY	23	69.6%	0.35
13	H.Berk	BERK	24	66.7%	0.46
14	O.Kriegel	USA JENG	23	65.2%	0.48
15	B.Harper	KRISTENSEN	25	64.0%	0.48
16	R.Miller	KRISTENSEN	22	54.5%	0.77
17	F.Yu	CHINA XNWY	17	47.1%	0.88
18	Y.Shao	CHINA WFL	3	100.0%	0.00
19	Y.Shen	CHINA XNWY	8	87.5%	0.12
20	Y.Zhang	CHINA SX CLUB	7	85.7%	0.14
21	K.Wu	CHINA XNWY	10	80.0%	0.20
22	C.Welland	LIN	9	77.8%	0.33
23	E.Berman	BERMAN	8	75.0%	0.38
24	X.Huang	CHINA WFL	18	72.2%	0.44
25	L.Cheng	CHINA SX CLUB	7	71.4%	0.43
26	J.Schwartz	BERMAN	10	70.0%	0.60
27	H.Li	CHINA WFL	9	66.7%	0.33
28	Y.Liu	CHINA SX CLUB	9	66.7%	0.44
29	A.Lin	LIN	5	60.0%	0.60
30	S.Liu	CHINA WFL	5	60.0%	0.80
31	A.Ladyzhensky	BERMAN	7	57.1%	0.57
32	M.Green	BERMAN	6	50.0%	0.50
33	J.Lieberman	LIN	13	46.2%	0.77
34	R.Li	CHINA SX CLUB	12	41.7%	0.67
35	T.Allen	LIN	8	25.0%	1.12

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	O.Kriegel	USA JENG	53	92.5%	0.07
2	B.Snowden	USA JENG	53	92.5%	0.07
3	G.Herman	KRISTENSEN	50	88.0%	0.14
4	B.Kristensen	KRISTENSEN	50	88.0%	0.14
5	J.Olsen	BERK	29	86.2%	0.17
6	B.Harper	KRISTENSEN	48	85.4%	0.19
7	R.Miller	KRISTENSEN	48	85.4%	0.19
8	A.Jeng	USA JENG	45	84.4%	0.16
9	R.Jeng	USA JENG	45	84.4%	0.16
10	T.Jin	CHINA XNWY	41	82.9%	0.27
11	Z.Sha	CHINA XNWY	41	82.9%	0.27
12	N.Chang	BERK	31	80.6%	0.23
13	S.Amer	BERK	39	79.5%	0.23
14	D.Soukup	BERK	46	78.3%	0.30
15	H.Berk	BERK	55	78.2%	0.31
16	K.Jin	CHINA XNWY	39	76.9%	0.41
17	F.Yu	CHINA XNWY	39	76.9%	0.41
18	Y.Shen	CHINA XNWY	14	100.0%	0.00
19	K.Wu	CHINA XNWY	14	100.0%	0.00
20	M.Green	BERMAN	16	93.8%	0.06
21	J.Schwartz	BERMAN	16	93.8%	0.06
22	L.Cheng	CHINA SX CLUB	13	92.3%	0.08
23	R.Li	CHINA SX CLUB	13	92.3%	0.08
24	H.Li	CHINA WFL	18	83.3%	0.28
25	S.Liu	CHINA WFL	18	83.3%	0.28
26	E.Berman	BERMAN	16	81.2%	0.25
27	A.Ladyzhensky	BERMAN	16	81.2%	0.25
28	X.Huang	CHINA WFL	10	80.0%	0.30
29	Y.Shao	CHINA WFL	10	80.0%	0.30
30	Y.Liu	CHINA SX CLUB	16	75.0%	0.31
31	Y.Zhang	CHINA SX CLUB	16	75.0%	0.31
32	T.Allen	LIN	19	73.7%	0.32
33	A.Lin	LIN	19	73.7%	0.32
34	J.Lieberman	LIN	10	50.0%	0.60
35	C.Welland	LIN	10	50.0%	0.60

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	O.Kriegel	USA JENG	96	-0.90	+1.64	+0.73	·
2	B.Snowden	USA JENG	96	-0.90	+1.64	+0.73	·
3	G.Herman	KRISTENSEN	96	-0.86	+1.57	+0.71	·
4	B.Kristensen	KRISTENSEN	96	-0.86	+1.57	+0.71	·
5	B.Harper	KRISTENSEN	96	+0.33	+0.24	+0.56	▲5
6	R.Miller	KRISTENSEN	96	+0.33	+0.24	+0.56	▲5
7	A.Jeng	USA JENG	96	-0.16	+0.62	+0.46	▼2
8	R.Jeng	USA JENG	96	-0.16	+0.62	+0.46	▼2
9	D.Soukup	BERK	80	+0.36	-0.07	+0.29	▲4
10	T.Jin	CHINA XNWY	80	-0.41	+0.59	+0.18	▼3
11	Z.Sha	CHINA XNWY	80	-0.41	+0.59	+0.18	▼3
12	H.Berk	BERK	96	+0.18	-0.05	+0.13	·
13	S.Amer	BERK	80	+0.51	-0.41	+0.10	▲2
14	N.Chang	BERK	64	-0.25	+0.27	+0.02	▼5
15	J.Olsen	BERK	64	+0.11	-0.18	-0.07	▼1
16	K.Jin	CHINA XNWY	80	+0.48	-1.19	-0.70	·
17	F.Yu	CHINA XNWY	80	+0.48	-1.19	-0.70	·

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Statistics