Sep 2023

Ladder for 1 Sep 2023 to 30 Sep 2023

Online statistics for 1 Sep 2023 to 30 Sep 2023

We have calculated various ladders for online play on RealBridge sessions hosted by the Auckland Bridge Club for the period 1 Sep 2023 to 30 Sep 2023. You needed to have played a certain number of times to be listed in the ladder. There are more details at the end about how the calculation is performed, and what is included. This is still an experimental feature. It will continue to evolve.

Please let us know (realbridge@akbc.co.nz) if you spot any problems or have any suggestions.

Open Ladder
Rank		Name	Number	Club	Played	Average¹
1	A♠	Kevin Hu	46340	Akarana	7	58.81%
2	A♥	Ian Clayton	4161	Hamilton	7	58.80%
3	A♦	John Buckleton	25761	Auckland	5	58.52%
4	A♣	Sara Worth	3548	None	12	58.09%
5	K♠	Zachary Yan	45646	Akarana	6	57.45%
6	K♥	Douglas Russell	15492	Auckland	12	57.37%
7	K♦	Cathy Carroll	31068	Waiheke	16	56.25%
8	K♣	Patrick Carter	3775	Auckland	5	56.20%
9	Q♠	Mark Robertson	35545	Auckland	5	55.92%
10	Q♥	Janet Barnard	1997	Auckland	7	55.23%
11	Q♦	Md Faisal Alam	26807	Howick	10	54.79%
12	Q♣	Cheryl Winsor	10588	Howick	9	54.63%
13	J♠	Cynthia Clayton	13263	Hamilton	6	54.52%
14	J♥	Judith Chandler	9758	Auckland	9	54.34%
15	J♦	Derek Bartosh	3467	Auckland	5	54.10%
16	J♣	Peter Ramsey	43711	Napier	5	53.81%
16	J♣	Sharon Mosley	64879	Akarana	5	53.81%
18		Leslie Watt	56607	Auckland	7	53.77%
19		Russell Watt	17820	Auckland	8	53.74%
20		Anne Gelb	7057	Auckland	19	53.44%
21		Ray Kingston	9878	Auckland	13	53.11%
22		Mike Dunn	5733	Auckland	5	53.00%
23		Trudy Lange	10107	Auckland	17	52.94%
24		Rona Driscoll	19976	Taupo	8	52.87%
25		Leah Andrews	21534	Auckland	7	52.84%
26		Dianne Evans	74554	Winton	5	52.76%
27		Lucie Armstrong	49013	Hamilton	5	52.65%
27		Barbara Daly	43568	Hamilton	5	52.65%
29		Chris Fleming	30408	Auckland	15	52.43%
30		Thomas Freeman-Greene	51590	Auckland	5	52.24%
31		Beth Henderson	38982	Hibiscus Coast	5	52.16%
31		Jo McKeown	44104	Auckland	5	52.16%
33		Ian Beattie	32124	Christchurch	10	51.87%
34		Christine Wilson	31091	North Shore	10	51.86%
35		Gay Bradbury	2863	Auckland	5	51.77%
36		Marie Ewbank	6081	Auckland	5	51.73%
37		Jan Bennett	36764	Auckland	9	51.64%
38		Takayo Yanagisawa	36064	Auckland	7	51.52%
39		Pauline Andrews	1608	Auckland	7	51.50%
40		Heather Robertson	42382	Auckland	7	51.44%
41		Thelma Burd	32380	Hamilton	11	51.36%
42		Vaughan Smith	47853	Auckland	5	51.28%
43		Fiona Moon	30514	Auckland	15	51.25%
44		Jacinda Manconi	32978	Mt Albert	5	51.15%
45		Terry Cain	19882	Christchurch	8	50.93%
46		Nola Clark	4103	Auckland	6	50.91%
47		Lynn Hall	9586	Masterton	7	50.80%
48		Ben Wang	54552	Auckland	10	50.73%

Intermediate/Junior Ladder
Rank		Name	Number	Club	Played	Average¹
1	A♠	Sara Worth	3548	Akarana	12	58.09%
2	A♥	Cathy Carroll	31068	Waiheke	16	56.25%
3	A♦	Derek Bartosh	3467	Auckland	5	54.10%
4	A♣	Leah Andrews	21534	Auckland	7	52.84%
5	K♠	Chris Fleming	30408	Auckland	15	52.43%
6	K♥	Thomas Freeman-Greene	51590	Auckland	5	52.24%
7	K♦	Beth Henderson	38982	Hibiscus Coast	5	52.16%
7	K♦	Jo McKeown	44104	Auckland	5	52.16%
9	Q♠	Ian Beattie	32124	Christchurch	10	51.87%
10	Q♥	Marie Ewbank	6081	Auckland	5	51.73%
11	Q♦	Jan Bennett	36764	Auckland	9	51.64%
12	Q♣	Takayo Yanagisawa	36064	Auckland	7	51.52%
13	J♠	Heather Robertson	42382	Auckland	7	51.44%
14	J♥	Thelma Burd	32380	Hamilton	11	51.36%
15	J♦	Vaughan Smith	47853	Auckland	5	51.28%
16	J♣	Fiona Moon	30514	Auckland	15	51.25%
17		Jacinda Manconi	32978	Mt Albert	5	51.15%
18		Terry Cain	19882	Christchurch	8	50.93%
19		Ben Wang	54552	Auckland	10	50.73%
20		Kay Cunneen	33641	Christchurch	7	49.79%
21		Julia Thomas	27847	Christchurch	5	49.22%
22		Anna Powell	1514	Auckland	8	48.82%
23		Duncan White	18466	Hamilton	8	48.78%
24		Gopi Nayar	51596	Auckland	5	48.43%
25		Sybil Cornell	4518	Auckland	9	48.25%
26		Paula McTaggart	52641	Auckland	16	48.08%
27		Chris Curreen	37962	Waiheke	5	47.94%

Junior Ladder
Rank		Name	Number	Club	Played	Average¹
1	A♠	Sara Worth	3548	Akarana	12	58.09%
2	A♥	Thomas Freeman-Greene	51590	Auckland	5	52.24%
3	A♦	Beth Henderson	38982	Hibiscus Coast	5	52.16%
3	A♦	Jo McKeown	44104	Auckland	5	52.16%
5	K♠	Vaughan Smith	47853	Auckland	5	51.28%
6	K♥	Ben Wang	54552	Auckland	10	50.73%
7	K♦	Gopi Nayar	51596	Auckland	5	48.43%
8	K♣	Paula McTaggart	52641	Auckland	16	48.08%
9	Q♠	Cindy Wang	54850	Christchurch	6	46.41%
9	Q♠	Yvonne Zhang	56149	Auckland	6	46.41%
11	Q♦	David Kranz	52775	Auckland	8	46.15%
12	Q♣	Bryan Travers	46325	Howick	5	45.45%

Statistics for all boards:

Percentage when declarer: (9873)

50.80%

... percentage that made: (6505 of 9873)

65.89%

... when Opener holds at least 16 hcp: (2803)

50.36%

... when opened but most didn't: (301)

52.26%

... when Opener preempted: (886)

52.74%

... was preempted when most didn't: (400)

54.71%

... when Declarer is distributional³: (1195 hands)

51.50%

... when in a unique contract: (2427)

45.18%

Percentage score when on opening lead: (9926)

49.23%

... when leading from a sequence⁴: (1305)

49.60%

... when leading trumps⁴: (282)

49.30%

... when trumps was the only right lead⁴: (7/159)

... when leading a singleton⁴: (527)

54.93%

... when leading a doubleton⁴: (431)

49.54%

... when leading passively⁴: (2315)

49.52%

... when leading actively⁴: (5013)

48.30%

Highest HCP:	♠ AK76 ♥ AQ8 ♦ AK54 ♣ AK [link] (27 hcp)
Freakiest Hand:	♠ - ♥ A7432 ♦ - ♣ KJ975432 [link] (6.5)

Beer cards won: (23)

Who was dealt the MOST high card points on average?
Rank		Name	Hands	Average HCP
1	A♠	Allan Joseph	103	10.76
2	A♥	Trish Young	256	10.74
3	A♦	Rhonda Graham	165	10.70
4	A♣	Pam Nunn	136	10.65
5	K♠	Patrick Carter	120	10.64
6	K♥	Virginia Stuart	120	10.63
7	K♦	Anne Renwick	105	10.57
8	K♣	Nigel Hewitson	108	10.53
9	Q♠	Shirley Lattimore	136	10.50
10	Q♥	Kerri McCrae	128	10.48
11	Q♦	Neil Horsfield	105	10.45
12	Q♣	Sybil Cornell	248	10.40
13	J♠	Clare Cryer	192	10.37
14	J♥	Steve Moore	112	10.37
15	J♦	Thomas Freeman-Greene	125	10.36
16	J♣	Rosa Mishkin	182	10.35

Who was dealt the LEAST high card points on average?
Rank		Name	Hands	Average HCP
1	A♠	Jimmy Ching	100	8.65
2	A♥	Derek Bartosh	130	9.26
3	A♦	Alan Dormer	108	9.34
4	A♣	Marilyn Jackson	102	9.34
5	K♠	Anita Thirtle	104	9.36
6	K♥	Lynn Hall	203	9.36
7	K♦	Patricia Mahoney	108	9.39
8	K♣	Jessica Morris	112	9.41
9	Q♠	Premkumar Soundranayagam	138	9.42
10	Q♥	Tony Winters	102	9.43
11	Q♦	Trish Murphy	104	9.47
12	Q♣	Yvonne Zhang	148	9.49
13	J♠	Christina Hyde	117	9.50
14	J♥	John Lory	185	9.52
15	J♦	Anthony Wilson	290	9.53
16	J♣	Deborah McCutcheon	126	9.54

Who declares most frequently?
Rank		Name	Total Hands	Percent as Declarer
1	A♠	William Leach	139	38.85%
2	A♥	Duncan White	200	37.50%
3	A♦	Rosa Mishkin	181	35.91%
4	A♣	Cheryl Winsor	270	35.56%
5	K♠	Carol Joseph	136	35.29%
6	K♥	Mike Dunn	155	32.90%
7	K♦	Nichola Dallas	119	32.77%
8	K♣	Patrick Carter	120	32.50%
9	Q♠	Sita Monaghan	108	32.41%
10	Q♥	Joanna Silk	152	31.58%
11	Q♦	Jan France	111	31.53%
12	Q♣	Trish Young	253	31.23%
13	J♠	Virginia Stuart	119	31.09%
14	J♥	Beth Henderson	116	31.03%
15	J♦	Jody Burchall	124	30.65%
16	J♣	Lee Merlini	108	30.56%

Frequency Declarer Is Making
This table is not just about play - it also relects bidding. There are two good ways to get on this table: (1) by being a great declarer, (2) by being a sound bidder; there are two bad ways to get on this table: (1) by being a chronic underbidder, and (2) by never sacrificing. Regardless of which category you fall into, it is better to be higher than lower in the ranking.
Rank		Name	Making	Total	Percent
1	A♠	Maureen Piper	23	29	79.31%
2	A♥	Karen Smith	29	37	78.38%
3	A♦	Ian Clayton	32	41	78.05%
4	A♣	Carolyn Guthrie	21	27	77.78%
5	K♠	Susan Steedman	19	25	76.00%
6	K♥	Sally Shentova	22	29	75.86%
6	K♥	Helen Smith	22	29	75.86%
8	K♣	Lee Moselen	30	40	75.00%
9	Q♠	Patrick Carter	29	39	74.36%
10	Q♥	John Khouri	23	31	74.19%
11	Q♦	Judith Chandler	40	54	74.07%
11	Q♦	Chris Curreen	20	27	74.07%
13	J♠	Chris Fleming	74	100	74.00%
14	J♥	Rosa Mishkin	48	65	73.85%
15	J♦	John Buckleton	50	68	73.53%
15	J♦	Peter Ramsey	25	34	73.53%
17		Barbara Fitzgerald	19	26	73.08%
17		Leo Sim	19	26	73.08%
17		Tony Winters	19	26	73.08%
20		Ray Crowe	24	33	72.73%
21		Shirley Lattimore	21	29	72.41%
21		Vaughan Smith	21	29	72.41%
23		Trudy Lange	88	122	72.13%
24		Jan Bennett	41	57	71.93%
25		Allan Morris	23	32	71.88%
26		Sita Monaghan	25	35	71.43%
27		Felicity Hannay	72	101	71.29%
28		Pauline Andrews	47	66	71.21%
29		Janet Barnard	37	52	71.15%
30		Sara Worth	59	83	71.08%
31		Cynthia Clayton	34	48	70.83%
32		Douglas Russell	55	78	70.51%
33		John Lory	31	44	70.45%
33		Anna Powell	31	44	70.45%
35		Kerri McCrae	19	27	70.37%
36		Virginia Stuart	26	37	70.27%
37		Ray Kingston	66	94	70.21%
38		Bernard Lamusse	23	33	69.70%
39		Cathy Carroll	72	104	69.23%
39		Alan France	18	26	69.23%
39		Dennis Apperley	18	26	69.23%
39		Barbara Daly	18	26	69.23%
43		Fiona Moon	89	129	68.99%
44		Kevin Hu	40	58	68.97%
44		Derek Bartosh	20	29	68.97%
46		Clare Cryer	31	45	68.89%
47		Ngaere Webb	22	32	68.75%
48		Sharon Mosley	24	35	68.57%
49		Anne Gelb	82	120	68.33%
50		Madeline Gunn	28	41	68.29%

Position		Name	Hands	Average
Double Dummy Declarer Success
This table shows how many tricks a declarer takes compared to double dummy play, given the actual lead. A figure of +1.0 for example would mean that on average the declarer takes one more trick than the double dummy result.
1	A♠	Marie Ewbank	27	+0.22
2	A♥	Mike Dunn	51	+0.20
3	A♦	Mark Robertson	33	+0.18
4	A♣	Jacinda Manconi	33	+0.15
5	K♠	Valerie Gardiner	52	+0.12
6	K♥	Ian Beattie	63	+0.08
7	K♦	Douglas Russell	78	+0.08
7	K♦	Barbara Daly	26	+0.08
9	Q♠	Lee Moselen	40	+0.08
10	Q♥	Richard Cross	27	+0.07
11	Q♦	Sara Worth	83	+0.07
12	Q♣	Susan Steedman	25	+0.04
13	J♠	Sylvester Riddell	26	+0.04
14	J♥	Jimmy Ching	28	+0.04
15	J♦	Kevin Hu	58	+0.03
15	J♦	Sally Shentova	29	+0.03
17		Paul Buck	30	+0.00
17		Ray Kingston	94	+0.00
17		Barbara Fitzgerald	26	+0.00
17		Allan Morris	32	+0.00

Position		Name	Hands	Average
Double Dummy Defender Success
This table shows how many tricks you and your partner take in defence compared to double dummy play, given the actual lead. A figure of +1.0 for example would mean that on average the defender takes one more trick than the double dummy result.
1	A♠	Bruce Marr	48	+0.73
2	A♥	Mereana Cullen	48	+0.52
3	A♦	Tom Mulvey	33	+0.52
4	A♣	Viv Clifford - Marsh	35	+0.51
4	A♣	Graham Dale	35	+0.51
6	K♥	Helen Smith	45	+0.51
6	K♥	Neil Horsfield	45	+0.51
8	K♣	Gopi Nayar	95	+0.48
9	Q♠	Lorraine Inglis	34	+0.47
10	Q♥	Gerald Baptist	30	+0.47
11	Q♦	Jan France	50	+0.46
11	Q♦	Alan France	50	+0.46
13	J♠	Jessica Morris	53	+0.45
14	J♥	Arch Jelley	27	+0.44
15	J♦	Harsha Sirisena	28	+0.43
15	J♦	Lynda Bateman	42	+0.43
17		John Penny	40	+0.43
18		Lachie Shea	31	+0.42
19		Jackie Taylor	32	+0.41
20		Linda Farley	50	+0.40
20		Anne Renwick	50	+0.40
22		Wendy McEntegart	44	+0.39
23		Angela Heising	26	+0.38
24		Brenda Campbell	42	+0.38
24		Leah Andrews	84	+0.38
26		Patrick Carter	53	+0.38
27		Susan Heyes	59	+0.37
27		Tina Plank	59	+0.37
29		Katherine Griffith	27	+0.37
29		Nigel Gresson	27	+0.37
31		Ian Clayton	92	+0.37
32		Jody Burchall	52	+0.37
33		Judy Caldwell	25	+0.36
34		Zachary Yan	78	+0.36
34		Bernard Lamusse	78	+0.36
36		Chris Fleming	186	+0.35
37		Vaughan Smith	54	+0.35
38		Robyn Freeman-Greene	43	+0.35
38		Dale Lacey	43	+0.35
40		George Kaul	41	+0.34
41		Kevin Birch	86	+0.34
42		Elaine Rayner	30	+0.33
42		Carolyn Guthrie	42	+0.33
42		Graham Wakefield	81	+0.33
45		Takayo Yanagisawa	142	+0.32
45		Lucie Armstrong	71	+0.32
45		Barbara Daly	71	+0.32
48		Lee Moselen	68	+0.32
49		Tony Winters	53	+0.32
50		Lucian Gabriel	35	+0.31

Contract	Frequency	% Made	Average Score
Contract Success
This table shows declarer's success in various contracts.
7N	3	100.00%	97.92%
4♦X	7	57.14%	71.94%
6♦	20	70.00%	61.34%
2♣X	6	50.00%	59.59%
6N	73	67.12%	58.73%
4♥X	35	42.86%	58.21%
6♠	124	77.42%	57.52%
1NX	20	60.00%	55.63%
1♠	102	86.27%	55.52%
2♠	683	72.33%	55.48%
2♥X	25	44.00%	54.70%
Pass	53	100.00%	54.66%
1♦X	2	0.00%	54.34%
3N	1748	70.94%	53.97%
4♥	1044	71.46%	53.54%
2♥	560	75.36%	52.95%
6♣X	7	14.29%	52.79%
6♥	81	64.20%	52.17%
2♣	133	75.19%	52.03%
1N	660	72.88%	51.55%
2♠X	14	35.71%	51.02%
5♥	136	60.29%	50.88%
2♦	211	74.88%	50.76%
4♠	1097	62.63%	50.46%
1♥	31	83.87%	49.45%

Passed Out	53	100.00%	54.66%
Part Score	4883	66.78%	50.09%
Game+	4990	65.01%	51.50%
Slam	342	66.67%	54.30%
Grand Slam	6	83.33%	78.09%
Doubled	419	25.06%	40.41%
Redoubled	2	100.00%	90.00%

Position		Name	Good leads	Total	Percent
Double Dummy Opening Lead Success Rate
This table shows how often you make an opening lead that does not cost a trick for the defence, double dummy. Hands where every card leads to the same result are not counted.
1	A♠	Patricia Mahoney	26	29	89.66%
2	A♥	Paul Buck	22	25	88.00%
3	A♦	Cheryl Winsor	36	42	85.71%
4	A♣	Shirley Lattimore	23	27	85.19%
5	K♠	Jill Church	22	26	84.62%
6	K♥	Anna Powell	32	38	84.21%
7	K♦	Mike Dunn	25	30	83.33%
8	K♣	Douglas Russell	47	57	82.46%
9	Q♠	Ian Beattie	46	56	82.14%
10	Q♥	Valerie Gardiner	25	31	80.65%
11	Q♦	Anthony Wilson	45	56	80.36%
12	Q♣	John Lory	32	40	80.00%
12	Q♣	Patrick Carter	20	25	80.00%
14	J♥	Thelma Burd	31	39	79.49%
15	J♦	Cynthia Clayton	34	43	79.07%
15	J♦	Trish Young	34	43	79.07%
17		Rhonda Graham	26	33	78.79%
17		Jacinda Manconi	26	33	78.79%
19		Rona Driscoll	37	47	78.72%
20		Derek Bartosh	22	28	78.57%
21		Clare Cryer	29	37	78.38%
22		Felicity Hannay	47	60	78.33%
23		Janet Barnard	31	40	77.50%
24		Rosa Mishkin	24	31	77.42%
25		Ray Kingston	47	61	77.05%
26		Karen Smith	19	25	76.00%
26		Suzy Hails	19	25	76.00%
28		Kevin Hu	22	29	75.86%
29		Jan Bennett	34	45	75.56%
29		Robyn Chalmers	34	45	75.56%
31		Trudy Lange	74	98	75.51%
32		Carol Joseph	21	28	75.00%
32		Cindy Wang	21	28	75.00%
32		Russell Watt	33	44	75.00%
35		Pauline Andrews	43	58	74.14%
36		Julia Thomas	20	27	74.07%
37		Christine Wilson	34	46	73.91%
38		Judith Chandler	25	34	73.53%
38		Graham Wakefield	25	34	73.53%
40		David Kranz	43	59	72.88%
41		Ian Clayton	24	33	72.73%
41		Sybil Cornell	32	44	72.73%
41		Ben Wang	32	44	72.73%
44		Yvonne Zhang	18	25	72.00%
45		Cathy Carroll	48	67	71.64%
46		Chris Fleming	58	81	71.60%
47		Alan Dormer	20	28	71.43%
48		Paula McTaggart	82	115	71.30%
49		Kevin Birch	21	30	70.00%
49		Zachary Yan	21	30	70.00%

Opening	Count	Frequency	Average Result
Opening Bid Success Rates
This table shows the average outcome for each opening bid for the opening side.
1♣	2126	21.53%	51.03%
1♦	1856	18.80%	49.57%
1♥	1499	15.18%	50.75%
1♠	1485	15.04%	50.09%
1N	1603	16.24%	51.61%
2♣	216	2.19%	50.99%
2♦	339	3.43%	52.14%
2♥	166	1.68%	55.13%
2♠	200	2.03%	53.65%
2N	128	1.30%	50.42%
3♣	67	0.68%	50.50%
3♦	50	0.51%	53.95%
3♥	66	0.67%	52.60%
3♠	29	0.29%	50.38%
3N	3	0.03%	57.76%
4♣	7	0.07%	31.43%
4♦	7	0.07%	44.43%
4♥	7	0.07%	49.83%
4♠	12	0.12%	48.73%
5♣	1	0.01%	26.22%
5♦	6	0.06%	57.66%

¹ For the ladder: you need to have played at least 5 times in Open sessions during the period to be listed. For every 2 extra sessions you play above that you get to drop your lowest score, e.g. if you play 9 times your worst 2 scores are discarded and the best 7 are averaged, or if you play 15 times your worst 5 scores are discarded and the best 10 are averaged. Only those sessions where you played with a partner with the same grade or higher are included because we want to encourage players to play with lower graded friends without affecting their average. Only sessions where you played at least 10 boards are included. Some sessions are harder than others but we aren't adjusting for that. Supervised/Beginner/Learner sessions aren't included. For monthly emails we show just the top 50. On the website we show a more complete ladder - those with an average equal to or higher than: 50% (Open), 47.5% (Intermediate), and 45% (Junior). Matches scored in X-IMPS/IMPS are converted to a percentage using the formula used by the EBU National Grading System.

² For multi-session results the position shown is the overall position for all the sessions played up to that point.

³ Distributional means having a 7+ card suit or a void.

⁴ Leads are imperfectly classified into leads of trumps, a sequence (eg QJ10 or QJ9 not Q109), a singleton or low doubleton vs. a suit contract, passive (a suit headed by the 10 or lower), or active (anything else). No account is taken (currently) of the bidding: whether you have led the unbid suit, partner's suit, or obeyed a lead directing double, etc.

⁵ [link] links to the actual hand in RealBridge, [BSOL] links to the hand in BridgeSolverOnline - click the highlighted contract in the makeable contracts table and the lead success will be calculated, your lead shows with an asterisk.

To send feedback email realbridge@akbc.co.nz; to contact the principal director email director@akbc.co.nz

Auckland Bridge Club