MA Ding Zhi · GREEN PRIMARY SCHOOL
vs par split: bidding -0.62 · play -0.60
Strength of schedule: opponents averaged -0.29/bd (an easy draw) → opponent-adjusted -1.04/bd
Card play — on target: opening leads 88.9% #18 of 73 · declarer play 54.5% #57 of 73 · defence 73.3% #56 of 73
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (3) | 83.3% (6) |
| Declarer play | 50.0% (4) | 57.1% (7) |
| Defence | 66.7% (3) | 75.0% (12) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 100.0% (2) · ♦ 100.0% (2) · ♣ 100.0% (1)
vs par by strain: NT -2.09 (11) · a suit -0.90 (29)
vs par by level: part-score -0.18 (22) · game -3.12 (16) · slam +2.50 (2)
By role: declaring -0.91/bd (-2.92 vs par · 25) · defending -0.49/bd (+1.60 vs par · 15)
By vulnerability: vulnerable -1.04/bd (-1.14 vs par · 21) · not vulnerable -0.43/bd (-1.32 vs par · 19)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | X.Liu | P.Wang – B.Qin | Closed | 10 | -1.8 | -0.18 | -0.70 |
| Round 4 | X.Liu | S.Berk – J.Altman | Closed | 10 | -22.7 | -2.27 | +0.90 |
| Round 5 | X.Liu | M.Green – J.Schwartz | Closed | 10 | -4.7 | -0.47 | -0.60 |
| Round 7 | X.Liu | C.Andrews – S.Magnuson | Closed | 10 | -0.8 | -0.08 | -4.50 |
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 |
|---|---|---|---|---|---|---|---|
| +12.4 | Round 7 | MIDNIGHT SUNS | 7 | 6NT | ♥5 | = | +0 |
| +8.7 | Round 3 | CHINA WFL | 27 | 4♥ | ♠A | = | +7 |
| +4.8 | Round 7 | MIDNIGHT SUNS | 8 | 2♥ | ♥Q | +1 | +6 |
| +4.2 | Round 4 | BERK S | 7 | 3♦ | ♠5 | -2 | +7 |
| +4.1 | Round 5 | BERMAN | 19 | 3NT | ♥4 | -2 | +3 |
| +4.0 | Round 7 | MIDNIGHT SUNS | 10 | 3♥ | ♦Q | -1 | +12 |
| +3.0 | Round 4 | BERK S | 6 | 3♦ | ♥A | +2 | +10 |
| +2.7 | Round 4 | BERK S | 8 | 3NT | ♥K | = | +0 |
| +2.3 | Round 5 | BERMAN | 12 | 3NT | ♦10 | +1 | +0 |
| +2.2 | Round 5 | BERMAN | 13 | 4♠ | ♥Q | = | +0 |
| +1.5 | Round 5 | BERMAN | 20 | 3♠ | ♣K | -1 | +5 |
| +0.8 | Round 3 | CHINA WFL | 21 | 4♣ | ♠8 | = | +0 |
| +0.8 | Round 7 | MIDNIGHT SUNS | 5 | 5♦ | ♠6 | = | -11 |
| +0.6 | Round 3 | CHINA WFL | 24 | 6♥x | ♠2 | -2 | +5 |
| +0.6 | Round 5 | BERMAN | 16 | 1NT | ♣6 | = | -1 |
| +0.4 | Round 7 | MIDNIGHT SUNS | 1 | 2♥x | ♠6 | -2 | -3 |
| -0.2 | Round 4 | BERK S | 2 | 3♥ | ♦A | -1 | -2 |
| -0.3 | Round 3 | CHINA WFL | 30 | 3♦ | ♣A | -1 | -2 |
| -0.5 | Round 3 | CHINA WFL | 22 | 3NT | ♥3 | +1 | +0 |
| -1.0 | Round 5 | BERMAN | 17 | 4♣ | ♣8 | = | -7 |
| -1.0 | Round 7 | MIDNIGHT SUNS | 3 | 5♦ | ♣A | -2 | -2 |
| -1.3 | Round 3 | CHINA WFL | 29 | 2♦ | ♥5 | +1 | +0 |
| -1.3 | Round 4 | BERK S | 4 | 2♠ | ♥K | = | -1 |
| -1.5 | Round 3 | CHINA WFL | 23 | 2NT | ♠A | = | +0 |
| -1.5 | Round 3 | CHINA WFL | 26 | 3NT | ♦6 | +3 | -13 |
| -2.5 | Round 4 | BERK S | 9 | 4♠ | ♣6 | +2 | +13 |
| -2.5 | Round 5 | BERMAN | 14 | 2♥ | ♠K | = | +0 |
| -2.6 | Round 5 | BERMAN | 15 | 2NT | ♥Q | -2 | +6 |
| -2.7 | Round 7 | MIDNIGHT SUNS | 9 | 1NT | ♦A | -1 | -5 |
| -2.8 | Round 4 | BERK S | 3 | 3♠ | ♦6 | = | -1 |
| -3.4 | Round 3 | CHINA WFL | 25 | 4♦ | ♠A | = | +2 |
| -3.4 | Round 3 | CHINA WFL | 28 | 2♠ | ♣9 | +2 | -6 |
| -3.5 | Round 5 | BERMAN | 18 | 4♠ | ♦7 | = | +1 |
| -3.8 | Round 7 | MIDNIGHT SUNS | 2 | 4♥ | ♠2 | +2 | -14 |
| -4.3 | Round 4 | BERK S | 10 | 2♠ | ♦2 | -1 | -11 |
| -5.8 | Round 5 | BERMAN | 11 | 4♦ | ♣Q | = | -13 |
| -7.5 | Round 7 | MIDNIGHT SUNS | 4 | 3NT | ♠Q | -2 | -13 |
| -8.2 | Round 7 | MIDNIGHT SUNS | 6 | 4♥ | ♣A | -5 | -15 |
| -9.0 | Round 4 | BERK S | 5 | 5♣x | ♦A | -3 | +5 |
| -12.5 | Round 4 | BERK S | 1 | 5♦x | ♣A | -4 | -11 |