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ALT COMPETITION 2026 - EVENT 4

Bridge Base Online, April 20 - 23, 2026

Results produced by bridgeresults.org
CONDITIONS OF CONTEST
Leaderboard
Butler
Cross Table
Line-Up
Results of round:
01 02 03 04 05 06 07 08
Board details:
01 02 03 04 05 06 07 08

Sibrand van Oosten

All-tournaments history →
BBO nickname: sibrand WBF: 41257

Sibrand VAN OOSTEN
Country: Netherlands
WBF: NED11143293 (41257)
MPPPTitleRank
🔵 Open900—699

Tournament statistics
 BoardsIMPsIMP/bdButlerButl/bd% bds
Declarer 22 -18 -0.82 -17.5 -0.80 28%
Dummy 25 -4 -0.16 -7.3 -0.29 31%
Defense, player leads 16 +28 1.75 16.3 1.02 20%
Defense, partner leads 17 -4 -0.24 -7.4 -0.43 21%
Total 80 +2 0.03 -15.9 -0.20 100%
OtherDeclared (pair)Best roundWorst round
  47 R3 (+30) R4 (-38)
Card play (DD) (positions where every card gives the same result are not counted)CardsAccurateAcc %Subopt.Tricks lostLost/card
All cards 254 235 92.52% 19 22 0.0866
Opening lead 11 8 72.73% 3 3 0.2727
After the lead — declarer 149 139 93.29% 10 13 0.0872
After the lead — defense 94 88 93.62% 6 6 0.0638

Round 1  (match scorecard, all results of round 1)
BC CRASH
 VS
HARRIS
CLOSED ROOM
 NS: Jonathan Harris - Marusa Gold
 EW: Sibrand van Oosten - Friso Zwerver
BC CRASH
VS
HARRIS
CLOSED ROOM
NS: Jonathan Harris - Marusa Gold
EW: Sibrand van Oosten - Friso Zwerver

BRD # CONT LEAD TR SCORE Butler OTHER HOME AWAY
1 5♠xE ♥A-1 -1    +100 -4.1    +100 --
2 6♠S ♣10= =    +1430 -3.5    +1430 --
3 2NTS ♦A= +1    +150 -2.8 -150   7
4 2♣E ♠3+3 +3 -150  1.6 -150  --
5 3NTE ♦4= +2 -460  1.7 -400  2 
6 1NTS ♦K+1 +2    +150 -2.1 -50   5
7 4♥W ♣3-1 -1    +100 -4.5 -140   6
8 3NTW ♥J= = -400  4.9    +50 10 
9 1NTS ♥3= -2 -100  1.6 -50  2 
10 3♣E ♣7+1 = -110  -0.7 -130   1
11 3♥N ♦K= -1 -50  2.4 -50  --
12 3♥E ♦8+1 +2 -200  0.9 -420   6
13 2♠S ♦A+2 +3    +200 -1.0    +620 9 
14 6NT xS ♣J-2 -2 -300  4.8 -100  5 
15 4♠E ♣A= = -420  0.0 -420  --
16 4♠E ♥A+1 +2 -680  -0.6 -650  1 
ROUND 1 IMPs: 29 25
VP: 11.20 8.80
1 5♠xE ♥A-1 -1    +100    +100 -
2 6♠S ♣10= =    +1430    +1430 -
3 2NTS ♦A= +1    +150 -150  7
4 2♣E ♠3+3 +3 -150  -150  -
5 3NTE ♦4= +2 -460  -400  2
6 1NTS ♦K+1 +2    +150 -50  5
7 4♥W ♣3-1 -1    +100 -140  6
8 3NTW ♥J= = -400     +50 10
9 1NTS ♥3= -2 -100  -50  2
10 3♣E ♣7+1 = -110  -130  1
11 3♥N ♦K= -1 -50  -50  -
12 3♥E ♦8+1 +2 -200  -420  6
13 2♠S ♦A+2 +3    +200    +620 9
14 6NT xS ♣J-2 -2 -300  -100  5
15 4♠E ♣A= = -420  -420  -
16 4♠E ♥A+1 +2 -680  -650  1
ROUND 1 IMPs: 29 25 VP: 11.20 8.80


Round 3  (match scorecard, all results of round 3)
BC CRASH
 VS
GREENBERG
CLOSED ROOM
 NS: Mustafa Cem Tokay - Ted Greenberg
 EW: Sibrand van Oosten - Friso Zwerver
BC CRASH
VS
GREENBERG
CLOSED ROOM
NS: Mustafa Cem Tokay - Ted Greenberg
EW: Sibrand van Oosten - Friso Zwerver

BRD # CONT LEAD TR SCORE Butler OTHER HOME AWAY
1 4♥N ♥5-2 -1 -50  1.0 -100   2
2 3NT xN ♥6-3 -2 -500  7.7 -100  9 
3 4♠W ♥K+3 +2 -680  7.5 -100  11 
4 2♠E ♥3-1 -1    +100 -2.3    +100 --
5 2♥S ♦K+3 +2    +170 1.9    +620 10 
6 3NTE ♥2+1 +1 -630  2.5 -600  1 
7 1NTW ♠2= = -90  1.2 -100  --
8 4♠W ♥J-1 -1    +50 -1.3 -140   5
9 4♠W ♥6+2 +3 -710  8.6    +200 14 
10 2♠W ♦5= = -110  1.5 -200   3
11 4♥W ♦5+2 +2 -480  -3.9 -980   11
12 4♦S ♥7-2 =    +130 -2.0    +130 --
13 1♣N ♥5-1 -1 -100  2.7    +110 5 
14 4♥E ♣K+1 +1 -450  0.5 -450  --
15 4♥W ♦2+1 +1 -450  0.5 -420  1 
16 7♥N ♦5= =    +1510 -8.1    +1510 --
ROUND 3 IMPs: 51 21
VP: 16.73 3.27
1 4♥N ♥5-2 -1 -50  -100  2
2 3NT xN ♥6-3 -2 -500  -100  9
3 4♠W ♥K+3 +2 -680  -100  11
4 2♠E ♥3-1 -1    +100    +100 -
5 2♥S ♦K+3 +2    +170    +620 10
6 3NTE ♥2+1 +1 -630  -600  1
7 1NTW ♠2= = -90  -100  -
8 4♠W ♥J-1 -1    +50 -140  5
9 4♠W ♥6+2 +3 -710     +200 14
10 2♠W ♦5= = -110  -200  3
11 4♥W ♦5+2 +2 -480  -980  11
12 4♦S ♥7-2 =    +130    +130 -
13 1♣N ♥5-1 -1 -100     +110 5
14 4♥E ♣K+1 +1 -450  -450  -
15 4♥W ♦2+1 +1 -450  -420  1
16 7♥N ♦5= =    +1510    +1510 -
ROUND 3 IMPs: 51 21 VP: 16.73 3.27


Round 4  (match scorecard, all results of round 4)
IRISH OPEN
 VS
BC CRASH
OPEN ROOM
 NS: Tom Hanlon - Conor Boland
 EW: Sibrand van Oosten - Friso Zwerver
IRISH OPEN
VS
BC CRASH
OPEN ROOM
NS: Tom Hanlon - Conor Boland
EW: Sibrand van Oosten - Friso Zwerver

BRD # CONT LEAD TR SCORE Butler OTHER HOME AWAY
1 3NTW ♠4+4 +2 -460  -0.8 -520  2 
2 5♦xE ♠K-4 -4    +800 -3.0    +800 --
3 1NTE ♣J-1 -1    +100 -0.8    +100 --
4 4♠E ♥K+3 = -620  0.5 -620  --
5 5♦xW ♥6-2 -2    +300 -2.0    +300 --
6 4♥N ♣10+1 +1    +450 0.6    +450 --
7 2♠E ♥6+2 +2 -170  -2.1 -170  --
8 4♥W ♠6= = -420  0.5 -450  1 
9 3NTE ♠6+2 +3 -690  -0.1 -1400  12 
10 4♥N ♦7-1 -1 -100  -1.3 -100  --
11 4♠E ♦10+1 +1 -450  -0.2 -450  --
12 1♣E ♦K+1 +1 -90  0.1 -90  --
13 1NTS ♣A-2 =    +90 -6.3 -200  7 
14 6♦E ♠K-1 -1    +50 -7.5 -550  12 
15 4♠S ♥8= =    +620 -0.7    +620 --
16 4♥W ♣A-1 -1    +100 -6.6 -50  4 
ROUND 4 IMPs: 38 0
VP: 17.85 2.15
1 3NTW ♠4+4 +2 -460  -520  2
2 5♦xE ♠K-4 -4    +800    +800 -
3 1NTE ♣J-1 -1    +100    +100 -
4 4♠E ♥K+3 = -620  -620  -
5 5♦xW ♥6-2 -2    +300    +300 -
6 4♥N ♣10+1 +1    +450    +450 -
7 2♠E ♥6+2 +2 -170  -170  -
8 4♥W ♠6= = -420  -450  1
9 3NTE ♠6+2 +3 -690  -1400  12
10 4♥N ♦7-1 -1 -100  -100  -
11 4♠E ♦10+1 +1 -450  -450  -
12 1♣E ♦K+1 +1 -90  -90  -
13 1NTS ♣A-2 =    +90 -200  7
14 6♦E ♠K-1 -1    +50 -550  12
15 4♠S ♥8= =    +620    +620 -
16 4♥W ♣A-1 -1    +100 -50  4
ROUND 4 IMPs: 38 0 VP: 17.85 2.15


Round 5  (match scorecard, all results of round 5)
BC CRASH
 VS
RIPPEY
CLOSED ROOM
 NS: Irene Baroni - Mike Rippey
 EW: Sibrand van Oosten - Wout Klarenbeek
BC CRASH
VS
RIPPEY
CLOSED ROOM
NS: Irene Baroni - Mike Rippey
EW: Sibrand van Oosten - Wout Klarenbeek

BRD # CONT LEAD TR SCORE Butler OTHER HOME AWAY
1 3NTW ♥6+1 +1 -430  -0.2 -430  --
2 3NTN ♣2-2 -2 -200  3.6 -200  --
3 2♥N ♦5+3 +1    +140 3.7    +420 7 
4 3♣E ♦A-1 -1    +100 0.2    +140 1 
5 3NTW ♥2+2 +2 -460  -0.1 -400  2 
6 6♣N ♠2-2 -2 -100  11.0    +450 11 
7 4♠W ♦5+1 +1 -650  -1.4 -690   1
8 6♥W ♣Q-1 -1    +50 -11.5 -450   11
9 5♦xS ♣A= =    +550 -8.5    +150  9
10 1NTW ♠3+1 = -90  4.3    +100 5 
11 2♦N ♦4= =    +90 0.9    +120 1 
12 4♠N ♣Q+2 =    +620 -0.1    +690 2 
13 2♠xS ♣3-2 -3 -800  6.0 -660  4 
14 2♠E ♥6+1 +2 -170  1.8 -170  --
15 3♠W ♦K-1 -1    +50 -1.5    +50 --
16 4♥S ♣Q-1 -2 -100  2.0 -100  --
ROUND 5 IMPs: 33 21
VP: 13.28 6.72
1 3NTW ♥6+1 +1 -430  -430  -
2 3NTN ♣2-2 -2 -200  -200  -
3 2♥N ♦5+3 +1    +140    +420 7
4 3♣E ♦A-1 -1    +100    +140 1
5 3NTW ♥2+2 +2 -460  -400  2
6 6♣N ♠2-2 -2 -100     +450 11
7 4♠W ♦5+1 +1 -650  -690  1
8 6♥W ♣Q-1 -1    +50 -450  11
9 5♦xS ♣A= =    +550    +150 9
10 1NTW ♠3+1 = -90     +100 5
11 2♦N ♦4= =    +90    +120 1
12 4♠N ♣Q+2 =    +620    +690 2
13 2♠xS ♣3-2 -3 -800  -660  4
14 2♠E ♥6+1 +2 -170  -170  -
15 3♠W ♦K-1 -1    +50    +50 -
16 4♥S ♣Q-1 -2 -100  -100  -
ROUND 5 IMPs: 33 21 VP: 13.28 6.72


Round 6  (match scorecard, all results of round 6)
JUST JUMP
 VS
BC CRASH
OPEN ROOM
 NS: Petro Karlykov - Nickolas Neskoromnyi
 EW: Sibrand van Oosten - Wout Klarenbeek
JUST JUMP
VS
BC CRASH
OPEN ROOM
NS: Petro Karlykov - Nickolas Neskoromnyi
EW: Sibrand van Oosten - Wout Klarenbeek

BRD # CONT LEAD TR SCORE Butler OTHER HOME AWAY
1 2♠N ♥Q-1 -1 -50  -0.7 -100  2 
2 5♦W ♠9+2 = -400  1.9 -400  --
3 2♠W ♦J+1 = -110  -0.8 -170  2 
4 3NTW ♦9-1 -1    +100 -4.5 -140  6 
5 3NTE ♣10+1 +2 -460  3.5    +100  11
6 1♠S ♥J+1 +1    +110 1.2    +120 --
7 2♥W ♠9-1 -1    +100 -1.5    +100 --
8 4♥E ♣8-2 -4    +200 -9.6    +100 3 
9 3♠N ♦4= =    +140 -2.8    +140 --
10 3NTN ♦A+1 +1    +630 -0.6    +660  1
11 4♦S ♥A-3 -4 -200  -1.5 -200  --
12 3♦S ♥Q-2 -2 -200  -1.6 -430  6 
13 3♣W ♣5= = -110  1.4    +90  5
14 3♦N ♥K= =    +110 -3.8 -50  4 
15 3NTS ♥4-1 -1 -100  5.1 -100  --
16 4♥W ♠8= = -620  1.2 -620  --
ROUND 6 IMPs: 23 17
VP: 11.76 8.24
1 2♠N ♥Q-1 -1 -50  -100  2
2 5♦W ♠9+2 = -400  -400  -
3 2♠W ♦J+1 = -110  -170  2
4 3NTW ♦9-1 -1    +100 -140  6
5 3NTE ♣10+1 +2 -460     +100 11
6 1♠S ♥J+1 +1    +110    +120 -
7 2♥W ♠9-1 -1    +100    +100 -
8 4♥E ♣8-2 -4    +200    +100 3
9 3♠N ♦4= =    +140    +140 -
10 3NTN ♦A+1 +1    +630    +660 1
11 4♦S ♥A-3 -4 -200  -200  -
12 3♦S ♥Q-2 -2 -200  -430  6
13 3♣W ♣5= = -110     +90 5
14 3♦N ♥K= =    +110 -50  4
15 3NTS ♥4-1 -1 -100  -100  -
16 4♥W ♠8= = -620  -620  -
ROUND 6 IMPs: 23 17 VP: 11.76 8.24