Gebhart, Mark J
Current rating: 1463
Record: 15-18
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 89 | Ford, Aaron M (1500) | Lost 0-2 | -181461 |
| 2sealed | 595 | RIEMENSNIDER, KYLE (1482) | Won 2-0 | +181479 |
| 3sealed | 221 | Rosenberg, Zeke (1501) | Lost 1-2 | -171462 |
| 4sealed | 421 | victorine, kelly (1482) | Won 2-0 | +181480 |
| 5sealed | 426 | Lafleur, Thomas (1498) | Lost 0-2 | -171463 |
| top | average opponent: 1493record: 2-3 | new rating: 1463 | ||
| Grand Prix Seattle 2009 (ARB standard) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 300 | Hopkins, Aaron (1480) | Lost 0-2 | -181480 |
| 2standard | 314 | Gillett, William (1481) | Lost 1-2 | -181462 |
| 3standard | 443 | Tilley, Jay (1518) | Won 2-0 | +191481 |
| 4standard | 487 | Terry, Nick (1482) | Lost 0-2 | -181463 |
| 5standard | 458 | Morales, Emilio (1464) | Won 2-0 | +181481 |
| 6standard | 362 | Gibson, Jamal (1481) | Won 2-0 | +181499 |
| 7standard | 278 | Griffin, Nathan (1457) | Lost 1-2 | -191480 |
| 8standard | 237 | Nambiar, Devin (1411) | Lost 0-2 | -191461 |
| 9standard | 197 | Empyrion, Jade (1462) | Won 0-0 | +181479 |
| top | average opponent: 1471record: 4-5 | new rating: 1479 | ||
| Grand Prix Denver 2008 (Lorwyn block) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 92 | Tempelaar, Randy (1500) | Lost 0-2 | -191519 |
| 2block | 249 | Curfman, Joshua (1482) | Won 2-0 | +181537 |
| 3block | 212 | Robillard, Brian (1500) | Lost 0-2 | -191518 |
| 4block | 214 | Jensen, Mathias (1482) | Lost 0-2 | -191499 |
| 5block | 245 | Stocks, Joel (1464) | Lost 0-2 | -181481 |
| 6block | 235 | Foster, William [USA] (1443) | Won 2-1 | +171498 |
| top | average opponent: 1479record: 2-4 | new rating: 1498 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 227 | Coufal, Weston (1500) | Won 2-0 | +171573 |
| 2extended | 72 | Gillman, Rusty (1518) | Won 2-1 | +171590 |
| 3extended | 103 | McDaniel, Landon J (1535) | Lost 0-0 | -191571 |
| 4extended | 128 | Harvey, Eugene (1817) | Lost 0-2 | -131558 |
| 5extended | 185 | Schaal, Matt (1468) | Lost 1-2 | -201538 |
| top | average opponent: 1568record: 2-3 | new rating: 1538 | ||
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 91 | Martin, Chris (1500) | Won 2-0 | +181518 |
| 2sealed | 57 | Dunn, Craig (1471) | Won 2-0 | +171535 |
| 3sealed | 8 | Blumenthal, Uriel (1550) | Won 2-0 | +181553 |
| 4sealed | 46 | Fiorillo, John (1927) | Lost 0-2 | -111542 |
| 5sealed | 71 | Harrelson, Eric W (1538) | Won 2-0 | +181560 |
| 6sealed | 43 | Sonne, Jonathan (2063) | Lost 0-2 | -101550 |
| 7sealed | 68 | Hill, Steve (1534) | Won 2-1 | +181568 |
| 8sealed | 47 | Rubin, Benjamin (1919) | Lost 0-2 | -121556 |
| top | average opponent: 1688record: 5-3 | new rating: 1556 | ||