🇨🇳 CHANG Xiufen · China
18rank
-6.0Butler · 16 bds
-0.38per board
±5.6swing
-0.19adjusted /bd
by round
Strength of schedule: opponents averaged +0.19/bd (a tough draw) → opponent-adjusted -0.19/bd
By role: declaring -2.60/bd (5) · defending +1.00/bd (10)
By vulnerability: not vulnerable -0.38/bd (16)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Play-off | Y.Liu | D.Berkowitz – A.Marriott | Open | 16 | -6.0 | -0.38 | · |
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 |
|---|---|---|---|---|---|---|---|
| +12.0 | Play-off | 🇺🇸 USA | 10 | 6♠ | ♥5 | -1 | · |
| +10.0 | Play-off | 🇺🇸 USA | 11 | 3N | ♦7 | -1 | · |
| +4.0 | Play-off | 🇺🇸 USA | 6 | 3♠ | ♣7 | -3 | · |
| +1.0 | Play-off | 🇺🇸 USA | 1 | 3N | ♠K | +2 | · |
| +1.0 | Play-off | 🇺🇸 USA | 7 | 3♣ | ♥T | +1 | · |
| +0.0 | Play-off | 🇺🇸 USA | 2 | 3N | ♠9 | -2 | · |
| +0.0 | Play-off | 🇺🇸 USA | 4 | 3♦ | ♣4 | -2 | · |
| +0.0 | Play-off | 🇺🇸 USA | 9 | 5♣x | ♥K | = | · |
| +0.0 | Play-off | 🇺🇸 USA | 14 | 1N | ♠3 | +3 | · |
| +0.0 | Play-off | 🇺🇸 USA | 16 | 3N | ♥5 | = | · |
| -1.0 | Play-off | 🇺🇸 USA | 5 | 3N | ♦4 | +3 | · |
| -3.0 | Play-off | 🇺🇸 USA | 3 | Pass | · | ||
| -6.0 | Play-off | 🇺🇸 USA | 13 | 2♣ | ♦6 | +2 | · |
| -6.0 | Play-off | 🇺🇸 USA | 15 | 2♥ | ♣A | +2 | · |
| -8.0 | Play-off | 🇺🇸 USA | 8 | 5♣x | ♠K | -2 | · |
| -10.0 | Play-off | 🇺🇸 USA | 12 | 1N | ♥4 | +2 | · |