Rosenthal, Klaas
Current rating: 1492
| Grand Prix Madrid 2010 (legacy) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 890 | Rutenberg, Michael (1446) | Won 2-0 | +181469 |
| 2legacy | 915 | Prete, Marco (1531) | Lost 1-2 | -171452 |
| 3legacy | 965 | Pardo de Santayana, Carlos (1500) | Won 2-0 | +191471 |
| 4legacy | 976 | Dusso, Stefano (1518) | Won 2-0 | +191490 |
| 5legacy | 796 | Mir, Narcis (1603) | Won 2-1 | +201510 |
| 6legacy | 843 | Giovannetti, Simone (1529) | Lost 0-2 | -181492 |
| top | average opponent: 1521record: 4-2 | new rating: 1492 | ||
| Grand Prix Stuttgart 2007 (LRW limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 38 | McGovern, Mark (1547) | Lost 0-2 | -161430 |
| 2sealed | 268 | Stich, Christian (1483) | Won 2-0 | +191449 |
| 3sealed | 116 | Hartmann, Yves (1515) | Lost 0-2 | -171432 |
| 4sealed | 285 | Bonk, Marcel (1482) | Won 2-0 | +191451 |
| top | average opponent: 1507record: 2-2 | new rating: 1451 | ||
| Grand Prix Stockholm 2007 (FUT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 24 | Stavas, Ola (1436) | Lost 0-2 | -191481 |
| 2sealed | 264 | Saul, Philip (1449) | Won 2-1 | +171498 |
| 3sealed | 160 | Malmberg, Peter (1580) | Lost 1-2 | -161482 |
| 4sealed | 304 | Aaen, Tommy (1487) | Lost 1-2 | -181464 |
| 5sealed | 282 | Porovic, Benjamin (1464) | Lost 1-2 | -181446 |
| 6sealed | 270 | Germeys, Jasper (1447) | Lost 1-2 | -181428 |
| 7sealed | 229 | Ostman, Joel (1449) | Lost 0-0 | -181410 |
| 8sealed | 184 | Ali, Joan (1392) | Won 2-0 | +181428 |
| 9sealed | 147 | jiwandono, conrad (1441) | Won 2-0 | +181446 |
| top | average opponent: 1460record: 3-6 | new rating: 1446 | ||