🇨🇳 MA Jiayi · CHINA U21
25rank
+5.7net boards · 48 bds
55.9%board-a-match
±0.6swing
by round
Bidding activity — not a pass: 32.1% (44/137)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Net | BAM% |
|---|---|---|---|---|---|---|
| Round 1 | T.Zheng | X.Friesen – T.Westerveld | Open | 2 | -0.4 | 40.0% |
| Round 2 | T.Zheng | H.Asano – N.Matsuda | Open | 2 | +1.4 | 85.0% |
| Round 3 | T.Zheng | E.Osen – K.Austad | Open | 2 | -0.2 | 45.0% |
| Round 4 | T.Zheng | J.Shearer – N.Tennant | Open | 2 | -0.6 | 35.0% |
| Round 5 | T.Zheng | K.Yagishita – K.Takizawa | Closed | 2 | +0.1 | 52.5% |
| Round 6 | T.Zheng | S.Jesse – Y.Tian | Closed | 2 | -0.8 | 30.0% |
| Round 7 | T.Zheng | O.Selby – A.Cope | Closed | 2 | +0.4 | 60.0% |
| Round 8 | T.Zheng | L.Ceglia – H.Martins Fortes | Closed | 2 | +0.9 | 72.5% |
| Round 9 | T.Zheng | Q.Chen – C.Havens | Closed | 2 | -0.6 | 35.0% |
| Round 10 | T.Zheng | A.Teixeira – B.Velickovic | Closed | 2 | +0.5 | 62.5% |
| Round 11 | T.Zheng | R.Toom – R.Zvorovski | Closed | 2 | +1.1 | 77.5% |
| Round 12 | T.Zheng | V.Patel – R.Jahagirdar | Closed | 2 | +0.6 | 65.0% |
| Round 13 | T.Zheng | C.Welland – J.Lieberman | Closed | 2 | -0.6 | 35.0% |
| Round 14 | T.Zheng | W.Yeung – Y.Tse | Closed | 2 | -0.3 | 42.5% |
| Round 15 | T.Zheng | L.Kearney – D.Coley | Closed | 2 | +1.4 | 85.0% |
| Round 16 | T.Zheng | R.Brocken – M.Brocken | Closed | 2 | -0.1 | 47.5% |
| Round 17 | T.Zheng | D.Salaverri Bottaro – B.Ochoa | Closed | 2 | +1.3 | 82.5% |
| Round 18 | T.Zheng | S.Semberoiz – F.Guerra | Closed | 2 | +0.7 | 67.5% |
| Round 19 | T.Zheng | P.Promjan – S.Kocharoen | Closed | 2 | -0.7 | 32.5% |
| Round 20 | T.Zheng | C.Zhao – J.Bakhshi | Closed | 2 | +1.5 | 87.5% |
| Round 21 | T.Zheng | A.Rolf-Larsen – V.Kolding | Closed | 2 | -1.3 | 17.5% |
| Round 22 | T.Zheng | T.Chowdhury – M.Prakash | Closed | 2 | +1.6 | 90.0% |
| Round 23 | T.Zheng | C.Ben Guigui – E.Bonin | Closed | 2 | -1.2 | 20.0% |
| Round 24 | T.Zheng | F.Nacrur – P.Cazabon | Closed | 2 | +0.9 | 72.5% |
Every board — best board-a-match first↑ top
| BAM% | Round | Opponents | Bd | Contract | Lead | Res |
|---|---|---|---|---|---|---|
| 98.8% | Round 20 | 🇺🇸 USA2U26W | 7 | 3NT | ♣9 | -2 |
| 94.2% | Round 15 | WE SHALL NOT PASS | 30 | 6♥ | ♠J | -1 |
| 94.2% | Round 18 | 🇦🇷 ARGENTINA U31 | 4 | 4♥ | ♦A | -3 |
| 94.2% | Round 22 | 🇮🇳 INDIA 1 | 12 | 4♠x | ♥A | = |
| 90.7% | Round 17 | 🇺🇾 URUGUAY | 1 | 2♠ | ♥J | +2 |
| 89.5% | Round 16 | 🇳🇱 NETHERLANDS U21 | 32 | 3NT | ♠A | +2 |
| 88.3% | Round 2 | 🇯🇵 JAPAN U21 | 4 | 2♠ | ♥K | -3 |
| 87.2% | Round 5 | 🇯🇵 JAPAN U26 | 10 | 4♥ | ♦7 | +2 |
| 86.1% | Round 12 | 🇮🇳 INDIA 2 | 24 | 3♠ | ♥8 | -2 |
| 86.1% | Round 22 | 🇮🇳 INDIA 1 | 11 | 4♥ | ♠K | = |
| 84.9% | Round 7 | 🏴 ENGLAND LIONS | 14 | 6♦ | ♠A | -2 |
| 83.7% | Round 2 | 🇯🇵 JAPAN U21 | 3 | 3NT | ♣7 | -2 |
| 83.7% | Round 10 | PROVISIONAL | 19 | 3NT | ♥8 | +3 |
| 81.4% | Round 8 | PE NA AREIA | 15 | 1NT | ♥5 | = |
| 80.2% | Round 11 | 🇪🇪 ESTONIA U31 | 21 | 3NT | ♣6 | = |
| 77.9% | Round 20 | 🇺🇸 USA2U26W | 8 | 3NT | ♣6 | = |
| 76.8% | Round 11 | 🇪🇪 ESTONIA U31 | 22 | 3♥ | ♠Q | -3 |
| 76.8% | Round 15 | WE SHALL NOT PASS | 29 | 1NT | ♠J | -1 |
| 74.4% | Round 24 | 🇨🇱 CHILE PAL CAPPUCCINO | 16 | 1NT | ♦K | -2 |
| 72.1% | Round 17 | 🇺🇾 URUGUAY | 2 | 3♥ | ♠Q | +1 |
| 71.0% | Round 24 | 🇨🇱 CHILE PAL CAPPUCCINO | 15 | 2♠ | ♣A | -1 |
| 68.6% | Round 14 | HKG CHINA U26W | 27 | 3♦ | ♣6 | +2 |
| 62.8% | Round 4 | 🏴 SCOTLAND | 7 | 5♥ | ♣2 | = |
| 62.8% | Round 8 | PE NA AREIA | 16 | 3♦ | ♥A | -2 |
| 57.0% | Round 1 | NL U26 | 1 | 3♣ | ♣2 | = |
| 55.8% | Round 19 | 🇹🇭 THAILAND U26 | 5 | 3NT | ♣2 | = |
| 51.1% | Round 6 | SOJA THE DRAGON | 12 | 5♦ | ♣J | = |
| 51.1% | Round 13 | U31 USA2 | 26 | 1NT | ♣6 | = |
| 46.5% | Round 3 | 🇳🇴 NORWAY U21 | 6 | 3♠ | ♣2 | -1 |
| 45.4% | Round 3 | 🇳🇴 NORWAY U21 | 5 | 1NT | ♠4 | -1 |
| 44.2% | Round 9 | 🇨🇦 CANADA | 18 | 2♥ | ♠8 | -1 |
| 44.2% | Round 12 | 🇮🇳 INDIA 2 | 23 | 2♠ | ♣4 | = |
| 41.9% | Round 10 | PROVISIONAL | 20 | 4♣ | ♠A | = |
| 40.7% | Round 18 | 🇦🇷 ARGENTINA U31 | 3 | 6♥ | ♠3 | +1 |
| 36.0% | Round 21 | 🇩🇰 DENMARK U26 | 9 | 4♠ | ♥Q | = |
| 36.0% | Round 23 | 🇫🇷 FRANCE U21 | 13 | 4♠ | ♥Q | -1 |
| 33.7% | Round 7 | 🏴 ENGLAND LIONS | 13 | 2♠ | ♦A | +2 |
| 24.4% | Round 1 | NL U26 | 2 | 4♠ | ♥A | +1 |
| 24.4% | Round 9 | 🇨🇦 CANADA | 17 | 3♠ | ♣2 | +1 |
| 19.8% | Round 5 | 🇯🇵 JAPAN U26 | 9 | 2♥ | ♦K | +1 |
| 18.6% | Round 14 | HKG CHINA U26W | 28 | 1NT | ♠T | = |
| 17.4% | Round 13 | U31 USA2 | 25 | 2♦ | ♥3 | +1 |
| 7.0% | Round 4 | 🏴 SCOTLAND | 8 | 3NT | ♦2 | +1 |
| 7.0% | Round 6 | SOJA THE DRAGON | 11 | 3NT | ♠7 | = |
| 7.0% | Round 19 | 🇹🇭 THAILAND U26 | 6 | 2♦ | ♣7 | +3 |
| 5.8% | Round 16 | 🇳🇱 NETHERLANDS U21 | 31 | 5♣x | ♦6 | -1 |
| 5.8% | Round 23 | 🇫🇷 FRANCE U21 | 14 | 5♥x | ♠K | -2 |
| 0.0% | Round 21 | 🇩🇰 DENMARK U26 | 10 | 2♠ | ♣Q | -1 |