Wroclaw 2024 — 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.Chen	JACK	42	+0.90	+38.0
2	J.Xiao	JACK	42	+0.90	+38.0
3	Z.Lai	CT U16	28	+0.36	+10.0
4	C.Lu	CT U16	28	+0.36	+10.0
5	S.Lillejord	THE VIKINGS	42	+0.29	+12.0
6	M.Moe	THE VIKINGS	42	+0.29	+12.0
7	C.Chen	JACK	42	+0.10	+4.0
8	K.Chen	JACK	42	+0.10	+4.0
9	T.Chen	CT 360	42	+0.10	+4.0
10	C.Wu	CT 360	42	+0.10	+4.0
11	Y.Huang	CT U16	28	-0.11	-3.0
12	Y.Peng	CT U16	28	-0.11	-3.0
13	K.Chang	CT 360	42	-0.33	-14.0
14	L.Wu	CT 360	42	-0.33	-14.0
15	F.Asplund Sivelind	THE VIKINGS	42	-0.38	-16.0
16	M.Nordqvist	THE VIKINGS	42	-0.38	-16.0
17	Y.Chang	CT U16	28	-1.25	-35.0
18	H.Chiu	CT U16	28	-1.25	-35.0

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	H.Chiu	CT U16	9	100.0%	0.00
2	J.Xiao	JACK	13	92.3%	0.15
3	C.Chen	JACK	10	90.0%	0.10
4	S.Lillejord	THE VIKINGS	8	87.5%	0.12
5	Z.Lai	CT U16	7	85.7%	0.14
6	T.Chen	CT 360	13	84.6%	0.15
7	M.Moe	THE VIKINGS	11	81.8%	0.18
8	L.Wu	CT 360	11	81.8%	0.18
9	Y.Chang	CT U16	5	80.0%	0.20
10	K.Chen	JACK	10	80.0%	0.50
11	C.Wu	CT 360	9	77.8%	0.22
12	F.Asplund Sivelind	THE VIKINGS	9	77.8%	0.33
13	C.Lu	CT U16	8	75.0%	0.38
14	K.Chang	CT 360	8	75.0%	0.38
15	A.Chen	JACK	10	70.0%	0.30
16	Y.Peng	CT U16	11	63.6%	0.36
17	M.Nordqvist	THE VIKINGS	10	60.0%	0.40
18	Y.Huang	CT U16	5	40.0%	0.60

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	M.Nordqvist	THE VIKINGS	8	100.0%	0.00
2	Y.Huang	CT U16	4	100.0%	0.00
3	L.Wu	CT 360	14	92.9%	0.07
4	C.Lu	CT U16	8	87.5%	0.25
5	Y.Peng	CT U16	8	87.5%	0.25
6	Y.Chang	CT U16	6	83.3%	0.33
7	C.Chen	JACK	11	81.8%	0.18
8	K.Chen	JACK	11	81.8%	0.18
9	A.Chen	JACK	10	80.0%	0.20
10	S.Lillejord	THE VIKINGS	10	80.0%	0.20
11	M.Moe	THE VIKINGS	12	75.0%	0.25
12	T.Chen	CT 360	8	75.0%	0.38
13	F.Asplund Sivelind	THE VIKINGS	15	66.7%	0.33
14	C.Wu	CT 360	12	66.7%	0.42
15	J.Xiao	JACK	8	62.5%	0.38
16	H.Chiu	CT U16	8	62.5%	0.75
17	Z.Lai	CT U16	5	60.0%	0.60
18	K.Chang	CT 360	9	55.6%	0.56

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.Chen	JACK	20	95.0%	0.05
2	K.Chen	JACK	20	95.0%	0.05
3	Z.Lai	CT U16	15	93.3%	0.13
4	C.Lu	CT U16	15	93.3%	0.13
5	K.Chang	CT 360	19	89.5%	0.16
6	L.Wu	CT 360	19	89.5%	0.16
7	F.Asplund Sivelind	THE VIKINGS	19	84.2%	0.16
8	M.Nordqvist	THE VIKINGS	19	84.2%	0.16
9	Y.Huang	CT U16	16	81.2%	0.19
10	Y.Peng	CT U16	16	81.2%	0.19
11	S.Lillejord	THE VIKINGS	19	78.9%	0.21
12	M.Moe	THE VIKINGS	19	78.9%	0.21
13	A.Chen	JACK	23	78.3%	0.26
14	J.Xiao	JACK	23	78.3%	0.26
15	T.Chen	CT 360	22	77.3%	0.27
16	C.Wu	CT 360	22	77.3%	0.27
17	Y.Chang	CT U16	14	64.3%	0.36
18	H.Chiu	CT U16	14	64.3%	0.36

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	H.Chiu	CT U16	66	37	56.1%
2	L.Wu	CT 360	113	56	49.6%
3	M.Nordqvist	THE VIKINGS	117	57	48.7%
4	F.Asplund Sivelind	THE VIKINGS	120	58	48.3%
5	Y.Huang	CT U16	86	41	47.7%
6	S.Lillejord	THE VIKINGS	107	50	46.7%
7	T.Chen	CT 360	115	53	46.1%
8	Y.Chang	CT U16	69	31	44.9%
9	K.Chen	JACK	121	54	44.6%
10	J.Xiao	JACK	116	51	44.0%
11	M.Moe	THE VIKINGS	106	46	43.4%
12	Y.Peng	CT U16	84	36	42.9%
13	A.Chen	JACK	115	49	42.6%
14	C.Lu	CT U16	78	33	42.3%
15	K.Chang	CT 360	111	46	41.4%
16	Z.Lai	CT U16	76	31	40.8%
17	C.Chen	JACK	118	48	40.7%
18	C.Wu	CT 360	119	48	40.3%

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	C.Chen	JACK	42	-0.42	+0.95	+0.53	·
2	K.Chen	JACK	42	-0.42	+0.95	+0.53	·
3	A.Chen	JACK	42	-0.04	+0.42	+0.38	·
4	J.Xiao	JACK	42	-0.04	+0.42	+0.38	·
5	S.Lillejord	THE VIKINGS	42	-0.10	+0.39	+0.29	·
6	M.Moe	THE VIKINGS	42	-0.10	+0.39	+0.29	·
7	F.Asplund Sivelind	THE VIKINGS	42	-0.18	+0.25	+0.06	·
8	M.Nordqvist	THE VIKINGS	42	-0.18	+0.25	+0.06	·
9	Y.Huang	CT U16	28	+0.60	-0.70	-0.10	▲6
10	Y.Peng	CT U16	28	+0.60	-0.70	-0.10	▲6
11	K.Chang	CT 360	42	+0.11	-0.26	-0.15	·
12	L.Wu	CT 360	42	+0.11	-0.26	-0.15	·
13	Y.Chang	CT U16	28	+0.06	-0.46	-0.40	·
14	H.Chiu	CT U16	28	+0.06	-0.46	-0.40	·
15	Z.Lai	CT U16	28	-0.19	-0.24	-0.43	▼6
16	C.Lu	CT U16	28	-0.19	-0.24	-0.43	▼6
17	T.Chen	CT 360	42	+0.32	-0.80	-0.48	·
18	C.Wu	CT 360	42	+0.32	-0.80	-0.48	·

Statistics

Tables