BERTHEAU Peter · BERTHEAU
238rank
+1.9Butler · 100 bds
+0.02per board
±3.9swing
-0.18vs par /bd · #293/478
+0.43adjusted /bd
by round
vs par split: bidding -0.15 · play +0.00
Strength of schedule: opponents averaged +0.41/bd (a tough draw) → opponent-adjusted +0.43/bd
Card play — on target: opening leads 60.0% #433 of 476 · declarer play 84.2% #130 of 478 · defence 81.6% #354 of 478
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 70.0% (10) | 53.3% (15) |
| Declarer play | 85.7% (7) | 83.3% (12) |
| Defence | 72.7% (22) | 88.9% (27) |
Opening leads by suit led: ♠ 62.5% (8) · ♥ 33.3% (6) · ♦ 40.0% (5) · ♣ 100.0% (6)
vs par by strain: NT +0.29 (38) · a suit -0.43 (61)
vs par by level: part-score -0.26 (43) · game -0.02 (47) · slam -0.33 (9)
By role: declaring +0.36/bd (-1.45 vs par · 51) · defending -0.33/bd (+1.14 vs par · 49)
By vulnerability: vulnerable +0.39/bd (+0.26 vs par · 50) · not vulnerable -0.35/bd (-0.62 vs par · 50)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | D.Zagorin | P.Thurston – M.Caley | Open | 10 | +13.5 | +1.35 | -0.30 |
| Round 2 | D.Zagorin | Y.Zhao – X.Li | Open | 10 | +8.9 | +0.89 | +1.30 |
| Round 3 | D.Zagorin | D.Clerkin – J.Clerkin | Closed | 10 | +24.3 | +2.43 | +3.10 |
| Round 4 | D.Zagorin | S.Mukherjee – D.Majumder | Open | 10 | -23.1 | -2.31 | -1.70 |
| Round 5 | D.Zagorin | P.Balakrishnan – R.Krishnan | Open | 10 | -7.9 | -0.79 | +1.00 |
| Round 6 | D.Zagorin | W.Watson – E.Hung | Open | 10 | +13.1 | +1.31 | -1.20 |
| Round 7 | D.Zagorin | G.Groetheim – P.Tondel | Open | 10 | -7.8 | -0.78 | -2.60 |
| Round 8 | D.Zagorin | J.Gu – H.Ao | Open | 10 | +0.4 | +0.04 | -1.60 |
| Round 9 | D.Zagorin | J.Sprung – D.Sprung | Open | 10 | -7.3 | -0.73 | -0.10 |
| Round 10 | D.Zagorin | S.Weinstein – R.Levin | Closed | 10 | -12.2 | -1.22 | +0.30 |
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 |
|---|---|---|---|---|---|---|---|
| +10.6 | Round 1 | TEAM CANADA | 4 | 6♦ | ♥7 | = | +7 |
| +9.9 | Round 8 | BASEGGIO | 3 | 3NT | ♦J | = | +0 |
| +9.5 | Round 1 | TEAM CANADA | 7 | 3NT | ♠2 | -1 | +12 |
| +9.1 | Round 2 | CHINA OPEN 2 | 16 | 6♠ | ♦A | = | +0 |
| +8.7 | Round 3 | LEVINE | 2 | 4♠ | ♣9 | = | +8 |
| +6.6 | Round 8 | BASEGGIO | 9 | 3♦ | ♠2 | = | +6 |
| +6.1 | Round 3 | LEVINE | 10 | 4♥x | ♣5 | -2 | +12 |
| +5.7 | Round 2 | CHINA OPEN 2 | 19 | 4♥ | ♦A | -3 | +14 |
| +5.7 | Round 6 | MANDALA | 2 | 4♥ | ♣A | +1 | +4 |
| +4.8 | Round 6 | MANDALA | 10 | 1NT | ♦Q | +1 | +0 |
| +4.7 | Round 10 | NICKELL | 27 | 4♥ | ♦8 | -2 | +11 |
| +4.4 | Round 8 | BASEGGIO | 1 | 3NT | ♠8 | +1 | +7 |
| +4.3 | Round 5 | TEXAN ACES | 23 | 4♠ | ♥A | -2 | +12 |
| +3.9 | Round 10 | NICKELL | 22 | 2♥ | ♦10 | +2 | +10 |
| +3.8 | Round 3 | LEVINE | 3 | 2NT | ♥2 | +1 | +7 |
| +3.4 | Round 2 | CHINA OPEN 2 | 20 | 3♦ | ♥A | -1 | +6 |
| +3.0 | Round 9 | MIXED UP | 17 | 4♥ | ♠3 | +1 | +0 |
| +2.9 | Round 1 | TEAM CANADA | 2 | 3♠ | ♦3 | +1 | +1 |
| +2.8 | Round 6 | MANDALA | 8 | 1NT | ♥K | +1 | +1 |
| +2.8 | Round 9 | MIXED UP | 14 | 2♠ | ♦10 | +1 | +0 |
| +2.4 | Round 1 | TEAM CANADA | 9 | 5♦ | ♣2 | = | +0 |
| +2.3 | Round 3 | LEVINE | 6 | 3NT | ♦3 | -1 | +5 |
| +2.3 | Round 6 | MANDALA | 1 | 3♦ | ♦7 | = | +5 |
| +1.9 | Round 7 | VIKING NATURAL | 11 | 2♥ | ♥A | -2 | -1 |
| +1.8 | Round 7 | VIKING NATURAL | 17 | 2♥ | ♦J | = | +0 |
| +1.8 | Round 8 | BASEGGIO | 4 | 2♠ | ♦3 | -1 | -1 |
| +1.8 | Round 9 | MIXED UP | 13 | 3NT | ♣9 | +2 | +0 |
| +1.6 | Round 3 | LEVINE | 5 | 1NT | ♠2 | -2 | +0 |
| +1.5 | Round 4 | DHAMPUR SUGAR MILLS | 19 | 2♥ | ♠A | +3 | +2 |
| +1.5 | Round 7 | VIKING NATURAL | 16 | 6♠ | ♥K | = | -11 |
| +1.4 | Round 1 | TEAM CANADA | 8 | 4♠x | ♥K | -2 | -3 |
| +1.3 | Round 7 | VIKING NATURAL | 15 | 4♥ | ♠9 | = | +0 |
| +1.0 | Round 2 | CHINA OPEN 2 | 12 | 2♥ | ♣Q | +1 | +0 |
| +1.0 | Round 3 | LEVINE | 1 | 1NTx | ♠10 | -1 | +0 |
| +0.9 | Round 3 | LEVINE | 8 | 3♣ | ♠K | -1 | -2 |
| +0.9 | Round 4 | DHAMPUR SUGAR MILLS | 11 | 4♦x | ♣A | -2 | -3 |
| +0.7 | Round 6 | MANDALA | 7 | 3♣ | ♦A | +1 | +0 |
| +0.6 | Round 5 | TEXAN ACES | 25 | 3NT | ♥2 | +2 | +1 |
| +0.6 | Round 6 | MANDALA | 3 | 2♦ | ♥J | = | -2 |
| +0.5 | Round 9 | MIXED UP | 16 | 4♥ | ♠K | +2 | -3 |
| +0.4 | Round 1 | TEAM CANADA | 10 | 4♥ | ♣2 | +1 | +0 |
| +0.4 | Round 4 | DHAMPUR SUGAR MILLS | 16 | 1NT | ♦2 | -1 | +0 |
| +0.3 | Round 6 | MANDALA | 4 | 3♦ | ♥K | +1 | -10 |
| +0.2 | Round 7 | VIKING NATURAL | 20 | 2♠ | ♠2 | = | +1 |
| +0.2 | Round 8 | BASEGGIO | 8 | 1♠ | ♠3 | +3 | -1 |
| +0.2 | Round 9 | MIXED UP | 19 | 3♦ | ♠2 | +1 | -1 |
| +0.1 | Round 2 | CHINA OPEN 2 | 18 | 3NT | ♠Q | +1 | +0 |
| +0.0 | Round 3 | LEVINE | 4 | 2♦ | ♥K | -1 | +0 |
| +0.0 | Round 3 | LEVINE | 9 | 3NT | ♥9 | = | +1 |
| +0.0 | Round 4 | DHAMPUR SUGAR MILLS | 18 | 2♥ | ♣3 | = | +0 |
| +0.0 | Round 5 | TEXAN ACES | 26 | 2♠ | ♦2 | = | -1 |
| -0.0 | Round 5 | TEXAN ACES | 30 | 4♠ | ♦2 | = | +0 |
| -0.1 | Round 2 | CHINA OPEN 2 | 11 | 2♣ | ♠K | -2 | +1 |
| -0.1 | Round 3 | LEVINE | 7 | 3NT | ♥10 | +1 | +0 |
| -0.2 | Round 5 | TEXAN ACES | 29 | 3NT | ♦J | +1 | -1 |
| -0.2 | Round 6 | MANDALA | 5 | 3♠ | ♥10 | -1 | -2 |
| -0.2 | Round 10 | NICKELL | 25 | 3NT | ♣6 | +1 | -1 |
| -0.3 | Round 1 | TEAM CANADA | 1 | 2♠ | ♥J | = | +1 |
| -0.4 | Round 7 | VIKING NATURAL | 13 | 6♠ | ♣2 | = | +8 |
| -0.5 | Round 7 | VIKING NATURAL | 18 | 3NT | ♥3 | +1 | +1 |
| -0.6 | Round 10 | NICKELL | 29 | 3NT | ♥7 | = | -1 |
| -0.7 | Round 2 | CHINA OPEN 2 | 13 | 4♥ | ♣A | +1 | +0 |
| -0.8 | Round 5 | TEXAN ACES | 28 | Pass | -3 | ||
| -1.1 | Round 5 | TEXAN ACES | 24 | 6♦ | ♣K | = | +2 |
| -1.1 | Round 9 | MIXED UP | 20 | 3NT | ♥4 | +3 | +13 |
| -1.2 | Round 10 | NICKELL | 24 | 6NT | ♠J | = | +0 |
| -1.4 | Round 8 | BASEGGIO | 6 | 3NT | ♥4 | +1 | -1 |
| -1.4 | Round 9 | MIXED UP | 12 | 6NT | ♦10 | = | +0 |
| -1.6 | Round 5 | TEXAN ACES | 27 | 2NT | ♠2 | -1 | +3 |
| -1.6 | Round 8 | BASEGGIO | 10 | 2NT | ♠9 | -1 | +0 |
| -1.7 | Round 4 | DHAMPUR SUGAR MILLS | 13 | 1NT | ♦2 | = | +1 |
| -1.7 | Round 6 | MANDALA | 9 | 2♥ | ♣A | -1 | -4 |
| -1.7 | Round 10 | NICKELL | 30 | 1NT | ♣2 | +1 | -1 |
| -1.8 | Round 2 | CHINA OPEN 2 | 17 | 3NT | ♠7 | +1 | +0 |
| -1.8 | Round 10 | NICKELL | 21 | 3NT | ♣2 | +1 | -1 |
| -1.9 | Round 9 | MIXED UP | 11 | 3NT | ♣Q | = | +1 |
| -2.2 | Round 6 | MANDALA | 6 | 4♠ | ♣A | -1 | -4 |
| -2.2 | Round 9 | MIXED UP | 18 | 3♠ | ♦J | = | +0 |
| -2.7 | Round 1 | TEAM CANADA | 5 | 3NT | ♥6 | -2 | -7 |
| -2.7 | Round 8 | BASEGGIO | 5 | 3NT | ♥A | +2 | +0 |
| -3.1 | Round 7 | VIKING NATURAL | 19 | 3♥ | ♦3 | = | -7 |
| -3.4 | Round 5 | TEXAN ACES | 22 | 2♠ | ♥9 | -1 | -5 |
| -3.6 | Round 1 | TEAM CANADA | 6 | 3NT | ♣2 | +1 | +0 |
| -3.6 | Round 10 | NICKELL | 26 | 3NT | ♥9 | = | +0 |
| -3.7 | Round 2 | CHINA OPEN 2 | 15 | 5♥ | ♠A | = | -6 |
| -3.8 | Round 4 | DHAMPUR SUGAR MILLS | 20 | 1NT | ♣A | +1 | -1 |
| -4.0 | Round 4 | DHAMPUR SUGAR MILLS | 14 | 4♠ | ♣2 | +1 | -2 |
| -4.1 | Round 2 | CHINA OPEN 2 | 14 | 1NT | ♦2 | +2 | -2 |
| -4.6 | Round 10 | NICKELL | 28 | 3♥ | ♣J | = | -6 |
| -4.8 | Round 4 | DHAMPUR SUGAR MILLS | 15 | 5♠x | ♣9 | -2 | -3 |
| -5.0 | Round 4 | DHAMPUR SUGAR MILLS | 12 | 4♠ | ♣3 | -2 | -7 |
| -5.2 | Round 7 | VIKING NATURAL | 14 | 4♠ | ♥2 | +1 | -11 |
| -5.3 | Round 7 | VIKING NATURAL | 12 | 2♠ | ♦A | -1 | -6 |
| -5.4 | Round 8 | BASEGGIO | 7 | 3NT | ♣K | -1 | -12 |
| -5.7 | Round 5 | TEXAN ACES | 21 | 6♣ | ♥2 | = | +2 |
| -6.6 | Round 4 | DHAMPUR SUGAR MILLS | 17 | 4♥x | ♦J | = | -4 |
| -7.1 | Round 1 | TEAM CANADA | 3 | 4♥ | ♦2 | +2 | -14 |
| -7.1 | Round 10 | NICKELL | 23 | 5♦x | ♣K | -2 | -8 |
| -9.0 | Round 9 | MIXED UP | 15 | 6♠ | ♥5 | -1 | -11 |
| -11.4 | Round 8 | BASEGGIO | 2 | 3NTx | ♦J | -3 | -14 |