BOSENBERG Christopher Henry · SOUTH AFRICA
vs par split: bidding -1.00 · play -0.36
Strength of schedule: opponents averaged +0.07/bd (a tough draw) → opponent-adjusted -0.41/bd
Card play — on target: opening leads 73.7% #188 of 310 · declarer play 100.0% #1 of 310 · defence 83.3% #173 of 311
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 83.3% (6) | 69.2% (13) |
| Declarer play | 100.0% (2) | 100.0% (7) |
| Defence | 66.7% (6) | 88.9% (18) |
Opening leads by suit led: ♠ 66.7% (6) · ♥ 60.0% (5) · ♦ 83.3% (6) · ♣ 100.0% (2)
vs par by strain: NT -1.67 (12) · a suit -1.27 (44)
vs par by level: part-score -1.11 (27) · game -1.46 (24) · slam -2.20 (5)
By role: declaring -0.12/bd (-3.09 vs par · 32) · defending -0.97/bd (+0.96 vs par · 24)
By vulnerability: vulnerable -0.28/bd (-1.82 vs par · 28) · not vulnerable -0.69/bd (-0.89 vs par · 28)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | N.Eber | J.Kalita – M.Nowosadzki | Open | 7 | -13.9 | -1.99 | -1.86 |
| Round 2 | N.Eber | J.Kranyak – V.Demuy | Open | 7 | -18.1 | -2.59 | -6.00 |
| Round 3 | N.Eber | T.Teramoto – H.Takano | Open | 7 | -12.8 | -1.83 | -1.71 |
| Round 4 | N.Eber | J.Chen – P.Huang | Open | 7 | +8.3 | +1.19 | -0.57 |
| Round 5 | N.Eber | A.Black – P.King | Open | 7 | -2.6 | -0.37 | -1.43 |
| Round 6 | N.Eber | X.Li – Z.He | Open | 7 | +19.8 | +2.83 | +2.71 |
| Round 7 | N.Eber | J.Zhou – Y.Chen | Open | 7 | +4.6 | +0.66 | -0.14 |
| Round 8 | N.Eber | J.Carroll – T.Hanlon | Open | 7 | -12.3 | -1.76 | -1.86 |
Every board — best Butler first↑ top
vs par = IMPs this pair scored above (+) or below (−) the board’s double-dummy par — what bidding and play (theirs and the opponents’) added or gave away against perfect play.
| Butler | Round | Opponents | Bd | Contract | Lead | Res | vs par |
|---|---|---|---|---|---|---|---|
| +11.0 | Round 6 | P D PIONEERS | 9 | 5♣xx | ♥2 | -2 | +11 |
| +10.3 | Round 7 | CHINA HYX | 15 | 4♠ | ♠6 | +1 | +1 |
| +8.6 | Round 4 | P D TIMES | 23 | 3NT | ♠3 | +1 | +10 |
| +7.4 | Round 5 | BLACK | 3 | 3♠ | ♦J | = | +10 |
| +7.3 | Round 1 | ZAWADA | 1 | 3NT | ♦10 | -1 | +10 |
| +7.0 | Round 7 | CHINA HYX | 16 | 6♠ | ♦5 | -3 | +9 |
| +5.7 | Round 4 | P D TIMES | 22 | 4♥ | ♦3 | = | +1 |
| +4.1 | Round 6 | P D PIONEERS | 10 | 3NT | ♥Q | -1 | +6 |
| +4.0 | Round 5 | BLACK | 7 | 6♥ | ♣10 | +1 | +1 |
| +3.9 | Round 3 | JAPAN | 17 | 4♠ | ♠2 | -1 | +8 |
| +3.4 | Round 3 | JAPAN | 19 | 3♠ | ♦K | +1 | +1 |
| +3.2 | Round 2 | LEBRON | 14 | 2♠ | ♦J | +1 | +1 |
| +2.7 | Round 8 | ROSENTHAL | 22 | 2♠ | ♥Q | -1 | +6 |
| +2.2 | Round 6 | P D PIONEERS | 8 | 3♦ | ♥4 | +1 | +1 |
| +2.1 | Round 4 | P D TIMES | 24 | 1NT | ♥4 | +1 | +1 |
| +2.0 | Round 2 | LEBRON | 12 | 3♦ | ♣2 | -2 | +0 |
| +1.8 | Round 6 | P D PIONEERS | 11 | 3♣ | ♣3 | = | +0 |
| +1.8 | Round 6 | P D PIONEERS | 13 | 2♠ | ♠7 | = | +0 |
| +1.2 | Round 2 | LEBRON | 11 | 3♠ | ♦2 | = | +1 |
| +1.0 | Round 5 | BLACK | 1 | 4♥ | ♣A | +1 | +0 |
| +1.0 | Round 5 | BLACK | 6 | 6NT | ♣10 | = | -11 |
| +0.9 | Round 8 | ROSENTHAL | 28 | 4♠ | ♦J | = | +3 |
| +0.8 | Round 4 | P D TIMES | 27 | 4♠ | ♦4 | +2 | -11 |
| +0.6 | Round 7 | CHINA HYX | 19 | 2♠ | ♦10 | -1 | +2 |
| +0.3 | Round 3 | JAPAN | 15 | 4♥ | ♠10 | +2 | -11 |
| -0.1 | Round 4 | P D TIMES | 25 | 3NT | ♠Q | = | +0 |
| -0.2 | Round 6 | P D PIONEERS | 12 | 4♥ | ♠2 | +1 | +0 |
| -0.4 | Round 5 | BLACK | 2 | 3♣ | ♦K | = | +1 |
| -0.5 | Round 4 | P D TIMES | 26 | 1NT | ♠7 | = | +1 |
| -0.9 | Round 6 | P D PIONEERS | 14 | 2♥ | ♠Q | +1 | +1 |
| -1.7 | Round 1 | ZAWADA | 2 | 3♥ | ♣8 | +1 | -10 |
| -1.7 | Round 1 | ZAWADA | 3 | 3♠ | ♣K | -2 | +1 |
| -1.8 | Round 7 | CHINA HYX | 20 | 3♥ | ♣9 | -1 | +0 |
| -1.9 | Round 1 | ZAWADA | 7 | 4♥ | ♦6 | -1 | +1 |
| -2.0 | Round 8 | ROSENTHAL | 23 | 2♣ | ♠K | +1 | +0 |
| -2.1 | Round 3 | JAPAN | 20 | 3♣ | ♠5 | = | +0 |
| -2.4 | Round 8 | ROSENTHAL | 24 | 2♠ | ♦2 | +1 | +0 |
| -2.5 | Round 3 | JAPAN | 18 | 3♥ | ♦2 | = | -6 |
| -2.6 | Round 1 | ZAWADA | 5 | 2♠ | ♠7 | -2 | -2 |
| -2.6 | Round 7 | CHINA HYX | 21 | 6♠ | ♥3 | = | +0 |
| -3.0 | Round 7 | CHINA HYX | 18 | 5NT | ♥2 | = | -13 |
| -3.7 | Round 8 | ROSENTHAL | 26 | 3♦ | ♠5 | +1 | -11 |
| -3.7 | Round 8 | ROSENTHAL | 27 | 2♠ | ♦J | +2 | -6 |
| -3.9 | Round 2 | LEBRON | 8 | 1NT | ♠2 | -1 | -5 |
| -4.1 | Round 8 | ROSENTHAL | 25 | 3♥ | ♦7 | -1 | -5 |
| -4.4 | Round 2 | LEBRON | 13 | 4♠ | ♥4 | +3 | -17 |
| -4.8 | Round 1 | ZAWADA | 4 | 1NT | ♣A | = | -12 |
| -5.4 | Round 3 | JAPAN | 16 | 4♥ | ♣6 | = | +0 |
| -5.9 | Round 7 | CHINA HYX | 17 | 5♣ | ♥K | = | +0 |
| -6.6 | Round 5 | BLACK | 4 | 6♠ | ♦K | -3 | -10 |
| -7.0 | Round 2 | LEBRON | 10 | 4♥ | ♣6 | -1 | -12 |
| -8.3 | Round 4 | P D TIMES | 28 | 3NTx | ♠3 | = | -6 |
| -8.5 | Round 1 | ZAWADA | 6 | 3NT | ♠A | +1 | -1 |
| -9.0 | Round 5 | BLACK | 5 | 4♠ | ♥7 | +1 | -1 |
| -9.2 | Round 2 | LEBRON | 9 | 4♠ | ♦Q | = | -10 |
| -10.4 | Round 3 | JAPAN | 21 | 5♣x | ♥2 | = | -4 |