Ruth, John
Current rating: 1555
Record: 32-28-2
| Grand Prix Bologna 2005 (SOK limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 85 | Rizzatto, Alex (1512) | Won 2-0 | +181553 |
| 3sealed | 58 | van de Logt, Tom (1644) | Won 2-0 | +191572 |
| 4sealed | 21 | Vidrih, Peter (1561) | Lost 0-1 | -181554 |
| 5sealed | 44 | Theilkaes, Aurelien (1596) | Lost 1-2 | -171537 |
| 6sealed | 97 | Erente, Cristiano (1517) | Won 2-0 | +181555 |
| 7sealed | 97 | De Giuli, Francesco (1638) | Lost 1-2 | -171538 |
| 8sealed | 109 | Mango, Gennaro (1480) | Won 2-0 | +171555 |
| top | average opponent: 1564record: 4-3 | new rating: 1555 | ||
| Grand Prix Leipzig 2005 (BOK limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 50 | Hark, Markus (1560) | Won 2-1 | +181590 |
| 3sealed | 4 | Krion, Paul (1533) | Lost 0-2 | -191571 |
| 4sealed | 64 | Schmid, Mark (1518) | Lost 0-2 | -191552 |
| 5sealed | 127 | Habermann, Marvin (1502) | Won 2-0 | +171569 |
| 6sealed | 99 | Rosner, Bodo (1751) | Lost 1-2 | -151554 |
| 7sealed | 100 | Schiefereder, Hans (1483) | Lost 1-2 | -191535 |
| top | average opponent: 1558record: 2-4 | new rating: 1535 | ||
| Grand Prix Vienna 2004 (COK limited) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 301 | Ritzmann, Mathias (1518) | Won 2-1 | +181561 |
| 2sealed | 168 | Remnud, Patrick (1501) | Draw 1-1 | -11560 |
| 3sealed | 160 | Urban, Stefan (1565) | Lost 1-2 | -181542 |
| 4sealed | 311 | Maksimovic, Milos (1478) | Won 2-0 | +171559 |
| 5sealed | 208 | Schonherr, Georg (1517) | Won 2-0 | +171576 |
| 6sealed | 131 | Rank, Rene (1486) | Lost 1-2 | -201556 |
| 7sealed | 194 | Hugony, Francesco (1525) | Lost 0-2 | -181538 |
| 8sealed | 199 | Lefterov, Alexander (1500) | Won 2-0 | +171555 |
| 9sealed | 144 | Mecz, David (1518) | Won 2-1 | +171572 |
| top | average opponent: 1512record: 5-3-1 | new rating: 1572 | ||
| Grand Prix Rimini 2004 (Mirrodin block) | starting rating: 1530 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 96 | Mazzarino, Marcello (1500) | Lost 0-2 | -181512 |
| 2block | 235 | Sera, Matteo (1482) | Lost 1-2 | -191493 |
| 3block | 328 | Morelli, Antonio (1464) | Lost 1-2 | -181475 |
| 4block | 355 | Osojnik, Aljaz (1446) | Won 2-1 | +171492 |
| 5block | 312 | Costantini, Andrea (1464) | Won 2-0 | +171509 |
| 6block | 235 | De Mattei, Sergio (1484) | Won 2-0 | +181527 |
| 7block | 184 | Pardi, Alessio (1502) | Won 2-0 | +181545 |
| 8block | 147 | Carbotti, Martino (1522) | Won 2-0 | +171562 |
| 9block | 75 | Scardone, Nicola (1516) | Lost 0-2 | -191543 |
| top | average opponent: 1487record: 5-4 | new rating: 1543 | ||
| Grand Prix Brussels 2004 (DST standard) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 79 | Jacoby, Paul (1500) | Lost 0-2 | -191555 |
| 2standard | 251 | Weiten, Alban (1455) | Won 2-1 | +161571 |
| 3standard | 167 | Le Campion, Marc (1623) | Lost 0-2 | -171554 |
| 4standard | 230 | Worner, Jurgen (1530) | Won 2-0 | +181572 |
| 5standard | 241 | Martineau, Sven (1536) | Won 2-0 | +171589 |
| 6standard | 177 | Kratena, Ivo (1459) | Lost 0-2 | -201569 |
| 7standard | 162 | Kelterbaum, Catherine (1500) | Lost 1-2 | -201549 |
| 8standard | 152 | Gunawan, Hendra (1482) | Lost 0-2 | -191530 |
| top | average opponent: 1511record: 3-5 | new rating: 1530 | ||
| Grand Prix Munich 2003 (MRD limited) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 7 | Cassar, Mark (1500) | Lost 1-2 | -201561 |
| 2sealed | 326 | Sengstake, Patrick (1478) | Lost 0-2 | -191542 |
| 3sealed | 445 | Kress, Rafael (1467) | Won 2-0 | +161558 |
| 4sealed | 388 | Luessmann, Ralph (1481) | Won 2-0 | +171575 |
| 5sealed | 275 | Kukuk, Kolja (1500) | Won 2-0 | +161591 |
| 6sealed | 248 | Kroll, Tobias (1636) | Lost 0-2 | -171574 |
| top | average opponent: 1510record: 3-3 | new rating: 1574 | ||
| Grand Prix Lyon 2003 (MRD limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 187 | Pontonnier, Julien (1500) | Won 2-1 | +171541 |
| 2sealed | 145 | Poirat, Gregory (1518) | Won 2-0 | +181559 |
| 3sealed | 127 | Perez Paez, Oscar (1591) | Lost 0-2 | -171542 |
| 4sealed | 197 | Vargas, Olivier (1518) | Won 2-0 | +171559 |
| 5sealed | 83 | Schaap, Sander (1483) | Won 2-1 | +171576 |
| 6sealed | 65 | Gennari, Raphael (1702) | Lost 1-2 | -161560 |
| 7sealed | 132 | Baguelin, Arnaud (1536) | Won 2-1 | +181578 |
| 8sealed | 73 | Hothow, Dominik (1734) | Won 2-1 | +201598 |
| 9sealed | 65 | Perez, Bastien (1603) | Lost 1-2 | -171581 |
| top | average opponent: 1576record: 6-3 | new rating: 1581 | ||
| Grand Prix London 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 61 | Glover, Tim (1500) | Won 2-0 | +181518 |
| 2block | 66 | Price, Chad (1516) | Won 2-1 | +181536 |
| 3block | 76 | Ramiao, Ricardo (1688) | Won 2-1 | +211557 |
| 4block | 18 | De Rosa, Antonino (1812) | Lost 1-2 | -141543 |
| 5block | 64 | Knowles, Chris (1533) | Lost 1-2 | -181525 |
| 6block | 116 | Pan, Jimmy (1462) | Won 2-0 | +171542 |
| 7block | 89 | Chanioux, Pierre (1547) | Lost 0-2 | -181524 |
| 8block | 87 | Roumanille, Stephane (1516) | Draw 1-1 | 01524 |
| top | average opponent: 1572record: 4-3-1 | new rating: 1524 | ||