Join Bridge Winners
All comments by Robert Thorstad
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I would assume that 2NT –4H is this hand?
Sept. 18, 2016
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Hi everyone. A quick update, and then I have to go to bed.

Thank you for all your comments :).

(1) A few rows in the original file were played by Bathurst or Lall but not
the two together. Thank you Ovunc and Joyjit for pointing this out. I have fixed these rows.

(2) Here are some updated descriptive statistics.

(A) Bathurst/Lall pass 6 times and open 49 times in 3rd seat.

6 Passes:

T2.Q96.Q5.JT9765 V
AT54.9652.Q6.K65 NV
JT43.QT62.AQ.874 V
763.AQ86.843.J92 V
QT97.Q5.KJ9.QT94 V
Q73.965.K43.QJ84 V

49 Opens (28 NV):

AQJ5.9763.T3.T74
KJ3.983.AK7.J942
J98.AQ8.865.K962
K542.K2.AQT872.5
Q76.A.QT9742.K98
83.AKQ.9632.AQ92
84.AJT9765.Q.KT2
K5.Q973.A983.QJ2
KJ5.JT2.KT983.AK
T9.T52.AK74.KJ64
J82.974.AKQ4.Q96
K63.A764.A95.A65
AKJ.KQJ632.Q94.Q
AK93.A4.K.AKQ982
KQ9643.AKQJ.73.T
Q4.AK843.A832.95
AKQ3.A6.975.9853
Q3.AQJ965.A7.Q62
AKQ.T973.KJ53.K4
QJ.AJ843.AK862.J
AK9.95.AKJ2.JT94
KQT.A987.Q82.K62
KT7.J98.62.AKT73
A52.AK8.T74.AQT3
A986.K754.A3.KQJ
AQJ97.AK.632.JT3
KT9.AT95.A8.A954
T8.76.AKQT6.Q963
KT2.K52.KQT7.A54
76.AT7.A953.AKT2
Q5.AQ6.J.KQJ6542
KT9863.AJ5.JT2.7
A6.J842.A8.KJT75
K5.98.AQ8763.A93
KQ4.K7.A862.AT43
KJ2.J3.AKT76.A54
4.AK42.AT9753.AT
AJT9.AK6.QT95.K5
KJ62.98.AQ76.J92
AK.AJ75.9542.KJT
K2.Q974.8752.Q52
A75.AKJ72.K765.T
KJT6.AT73.KJ8.J7
QT97.9.AJ85.AKJ5
K9.AJ3.KJ.AK9752
AKT52.Q7.T72.642
A2.643.AJ743.K74
Q.AJ8653.AKQ98.K
AQ632.K.KQ73.A42

(B) The same analysis for opponents and teammates yields:

153 Opens in 3rd seat
37 Passes in 3rd seat

(C) All data and scripts are public online. This could certainly be extended to use more hands.
If helpful, I used Python 2.7.
https://www.dropbox.com/sh/u9vnke0p64uwxx9/AABNhFBVC7imD4RJTV1M6LQLa?dl=0
Sept. 11, 2016
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Thank you all for your comments. I will continue to get back to you.

Ovunc – I added vulnerability to the document.

Tim there were 1493 total hands, 1/4 of which played by Bathurst/Lall (since 1/4 played by opponents @ their table, 1/2 played at other table).

The full list of hands they pass in 3rd
A7.972.K753.8764
K85.A2.T95.JT986
Q62.A843.QT6.873
QJ64.8653.8.K964
QT5.852.J85.KQ54
T2.Q96.Q5.JT9765
AT54.9652.Q6.K65
JT43.QT62.AQ.874
763.AQ86.843.J92
QT97.Q5.KJ9.QT94
Q73.965.K43.QJ84

The full list of hands they open in 3rd
52.QT986..AKT742
AK92.95.963.A854
AQJ5.9763.T3.T74
KJ3.983.AK7.J942
J98.AQ8.865.K962
K542.K2.AQT872.5
Q76.A.QT9742.K98
83.AKQ.9632.AQ92
84.AJT9765.Q.KT2
K5.Q973.A983.QJ2
KJ5.JT2.KT983.AK
T9.T52.AK74.KJ64
J82.974.AKQ4.Q96
K63.A764.A95.A65
AKJ.KQJ632.Q94.Q
AK93.A4.K.AKQ982
KQ9643.AKQJ.73.T
Q4.AK843.A832.95
AKQ3.A6.975.9853
7543.QJ.AQJ96.Q8
Q3.AQJ965.A7.Q62
AKQ.T973.KJ53.K4
QJ.AJ843.AK862.J
AK9.95.AKJ2.JT94
A7.AT854.A543.A6
KQT.A987.Q82.K62
KT7.J98.62.AKT73
A52.AK8.T74.AQT3
A986.K754.A3.KQJ
AQJ97.AK.632.JT3
KT9.AT95.A8.A954
T8.76.AKQT6.Q963
KT2.K52.KQT7.A54
76.AT7.A953.AKT2
Q5.AQ6.J.KQJ6542
KT9863.AJ5.JT2.7
A6.J842.A8.KJT75
K5.98.AQ8763.A93
KQ4.K7.A862.AT43
KJ2.J3.AKT76.A54
4.AK42.AT9753.AT
AJT9.AK6.QT95.K5
KJ62.98.AQ76.J92
AK.AJ75.9542.KJT
K2.Q974.8752.Q52
A75.AKJ72.K765.T
KJT6.AT73.KJ8.J7
QT97.9.AJ85.AKJ5
K9.AJ3.KJ.AK9752
AKT52.Q7.T72.642
A2.643.AJ743.K74
Q.AJ8653.AKQ98.K
AQ632.K.KQ73.A42
A982.65.KJ953.97
Sept. 11, 2016
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Just a neutral observer, but I have some data to add to this discussion. Here is a public link to the data: https://dl.dropboxusercontent.com/u/91249723/bathurst_lall_3rd_seat_opens.csv . If anyone wants to replicate my analysis I uploaded the (ugly but functinal) python code to the same folder.

I downloaded all LIN files from BBO of Bathurst-Lall matches since 2011 (i.e. the front page when you search).

I analyzed all hands where there was no opening bid in 1st/2nd seat (i.e. 3rd seat could open if they wanted to).

(1) Bathurst-Lall do not always open in 3rd seat. The first 5 hands found that they did not open in 3rd seat when given then chance were.

A7.972.K753.8764
K85.A2.T95.JT986
Q62.A843.QT6.873
QJ64.8653.8.K964
QT5.852.J85.KQ54

(2) Bathurst-Lall are not more likely than other players (teammates or opponents) to open in 3rd seat when given the chance:

- Opponents and Teammates opened on average in 3rd seat: 79.4% of time (162/204 hands)
- Bathurst-Lall opened on average in 3rd seat: 83.1% of the time (54/65 times)

Just a neutral observer with some data.
Sept. 11, 2016
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I think 2 = GF, 4, some hand with no 5+ card side suit, so probably (A) balanced no stop or (B) 3 suiter short
Aug. 26, 2016
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Not sure what a reasonable plan is here but I think the odds of partner having the A just went way up after he doesn't have the K. And we have to have great play for 7 with that card. I'm not creative enough to come up with the auction, but I vote for some auction that lets me blackwood.
June 30, 2016
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It's not clear this hand has as much to do with East's decision to open as NS undercompeting.
June 25, 2016
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Thank you for adding the junior discounts!
June 1, 2016
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It would be very cool to see this integrated with vugrpah commentary on BBO
May 13, 2016
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I suppose it's bad manners to vote for: “tell the rest of the club they can be counted on to coffee house so everyone gets points off them?”
March 31, 2016
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:) I'm sure you guys will bring some great results home, too!
March 16, 2016
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I think the best I can do is:
1 (strong) 1 (any hand, 12+)
1 (ask) 1!N (5+ )
2 (ask) 2NT (no side suit)
3 (ask) 3 (322)6 or (222)7
3 (ask) 3 2=2=3=6
4 (RKC on ) … and then your favorite sequence to ask a lot of questions about partner's hand after RKC.
Jan. 13, 2016
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Explaining my “neither” vote –

I think a major advantage of limited openings in precision is that we can preempt with wider ranges, knowing we're not missing a game. So with a mixed raise, I would tend to blast 3M preemptive if I think it's safe. Partner is rarely bidding again, so why tell the opponents I have some cards?
Sept. 13, 2015
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Oops. You're right :).
Oct. 10, 2014
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I'm curious how you rate 3NT?
Oct. 7, 2014
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Two things I'm really happy about are the increased scholarship and increasing the length of the qualifying event. These are both very good changes.

Also, go Tar Heels.
Sept. 30, 2014
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I would never pass, but I wonder whether 4C is a logical alternative.
Aug. 11, 2014
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One comment as a junior. I frequently play with other juniors who are fine to good players but have very few masterpoints (a few hundred at most). When we play in KO events, we basically have two choices. Either we recruit teammates solely because they have a lot of masterpoints (just to get ourselves into a reasonable bracket), or we don't and get placed in the lowest bracket in the event. That's no fun for us, and I think it's also no fun for folks who get matched against us.

It makes sense to me that directors should have discretion to refuse requests to play up, but if you seem to play at the level you are requesting to play, it seems to me sensible for everyone to let you play up.
Aug. 10, 2014
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I had the privilege to watch this hand from the comfortable seat of the dummy. Ben also does not mention that he played extremely well the whole night, and had just come off landing an extremely thin NT game for another game swing.
April 12, 2014
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