Theobalds, Graham
Current rating: 1493
Record: 15-18-5
| Grand Prix Birmingham 2017 (modern) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 369 | Olkinuora, Tuomo (1500) | Won 2-1 | +191454 |
| 2modern | 216 | Westberg, Jon [SWE] (1856) | Lost 0-0 | -111443 |
| 3modern | 601 | Aarts, Bram (1500) | Won 2-0 | +191462 |
| 4modern | 411 | Giorgetti, Cesare (1597) | Draw 1-1 | +31465 |
| 5modern | 384 | Ziegler, Rasmus (1512) | Won 2-1 | +181483 |
| 6modern | 242 | Van Kuijk, Harm-Joost (1705) | Lost 0-2 | -141469 |
| 7modern | 386 | Esguevillas, Luis (1528) | Won 2-1 | +201489 |
| 8modern | 268 | Abreu, Josue (1658) | Lost 1-2 | -151474 |
| 9modern | 376 | Koster, Rob (1533) | Won 2-0 | +191493 |
| top | average opponent: 1599record: 5-3-1 | new rating: 1493 | ||
| Grand Prix Barcelona 2017 (AER standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 33 | Thormahlen, Bruno (1658) | Lost 0-2 | -151470 |
| 4standard | 325 | Grancha Marin, Beatriz (1451) | Draw 1-1 | 01470 |
| 5standard | 313 | Zivec, Josef (1485) | Lost 0-2 | -181452 |
| 6standard | 427 | Arndt, Jochen (1429) | Lost 0-2 | -181434 |
| 7standard | 474 | Baroni, Stefano (1558) | Lost 0-2 | -161418 |
| 8standard | 456 | Booth, Nicholas (1405) | Draw 1-1 | 01418 |
| 9standard | 423 | Aixas, David Mico (1378) | Won 2-0 | +171435 |
| top | average opponent: 1481record: 1-4-2 | new rating: 1435 | ||
| Grand Prix Birmingham 2004 (DST limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 152 | Holderness, Matt [ENG] (1500) | Won 2-0 | +181503 |
| 2sealed | 122 | Cordell, Mathew (1477) | Draw 1-1 | 01503 |
| 3sealed | 85 | Bryce, Alasdair (1520) | Lost 0-2 | -181485 |
| top | average opponent: 1499record: 1-1-1 | new rating: 1485 | ||
| Grand Prix London 2003 (Onslaught block) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 9 | Kit, Kar Mun (1516) | Won 2-1 | +181534 |
| 3block | 44 | Jeudon, Florent (1919) | Lost 0-2 | -111523 |
| 4block | 80 | Aubert, Alban (1486) | Lost 0-2 | -191504 |
| 5block | 189 | Kamola, Konrad (1456) | Lost 1-2 | -191485 |
| top | average opponent: 1594record: 1-3 | new rating: 1485 | ||
| Grand Prix London 2002 (Odyssey block) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 78 | Bertiou, Simon (1518) | Draw 1-1 | +11470 |
| 3block | 104 | Cordell, Ben (1519) | Won 2-1 | +191489 |
| 4block | 86 | Chitel, Arnaud (1538) | Won 2-0 | +191508 |
| 5block | 43 | Loh, Mark (1566) | Won 2-1 | +191527 |
| 6block | 20 | Campos, Emilio (1602) | Won 2-1 | +191546 |
| 7block | 13 | Gouin, Steven (1789) | Lost 1-2 | -141532 |
| 8block | 32 | Duarte, Ricardo (1611) | Lost 0-2 | -161516 |
| top | average opponent: 1592record: 4-2-1 | new rating: 1516 | ||
| Grand Prix London 2001 (Invasion block) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 82 | Rivas, Mateo (1518) | Lost 1-2 | -181481 |
| 4block | 104 | Beguin, Alexandre (1595) | Won 2-0 | +201501 |
| 5block | 43 | Dreyling, Axel (1537) | Lost 0-2 | -171484 |
| 6block | 102 | Ranque, Wilfried (1642) | Lost 0-2 | -151469 |
| top | average opponent: 1573record: 1-3 | new rating: 1469 | ||
| Grand Prix Manchester 2000 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 23 | Young, Alasdair (1464) | Lost 0-1 | -191481 |
| 2sealed | 77 | Scolari, Matteo (1482) | Won 1-0 | +181499 |
| 3sealed | 78 | Harper, Matthew (1500) | Won 2-0 | +181517 |
| 4sealed | 60 | Connolly, Bryan (1500) | Lost 0-2 | -181499 |
| top | average opponent: 1487record: 2-2 | new rating: 1499 | ||