Senn, Jonathan
Current rating: 1461
Record: 29-33-1
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 589 | Wilson, Lyon (1500) | Lost 1-2 | -181461 |
| 2sealed | 682 | Freeman, Denise (1339) | Won 2-0 | +161477 |
| 3sealed | 505 | Metelo, Andre (1499) | Won 2-0 | +181495 |
| 4sealed | 539 | Reed, David (1573) | Lost 1-2 | -161479 |
| 5sealed | 486 | Fortson, Glenn (1509) | Lost 0-2 | -181461 |
| top | average opponent: 1484record: 2-3 | new rating: 1461 | ||
| Grand Prix Atlanta 2014 (JOU limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 448 | Lynch, Jeffrey (1526) | Lost 1-2 | -181489 |
| 4sealed | 518 | Sloan, Stephen (1614) | Won 2-0 | +201509 |
| 5sealed | 489 | Eaton, Ryan (1630) | Lost 0-2 | -161493 |
| 6sealed | 417 | Runyon, John (1690) | Lost 0-2 | -141479 |
| top | average opponent: 1615record: 1-3 | new rating: 1479 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 265 | Nikolich, Benjamin (1510) | Won 2-1 | +181542 |
| 4sealed | 156 | Mitchko, Aaron (1555) | Lost 0-2 | -181524 |
| 5sealed | 104 | Collins, Jason (1515) | Lost 1-2 | -181506 |
| 6sealed | 269 | Broer, Paul (1542) | Lost 0-2 | -171489 |
| 7sealed | 453 | Mehlenbacher, Bra (1468) | Won 2-0 | +181507 |
| top | average opponent: 1518record: 2-3 | new rating: 1507 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 1135 | Song, Long (1502) | Lost 1-2 | -181513 |
| 4modern | 1322 | Godbey, John (1533) | Won 2-1 | +181531 |
| 5modern | 1182 | Spear, Kurtis (1570) | Lost 0-2 | -171514 |
| 6modern | 1218 | Corvese, Harry (1839) | Won 2-1 | +231537 |
| 7modern | 1262 | Battisti, Andrew (1622) | Won 2-0 | +201557 |
| 8modern | 1125 | Winters, John (1719) | Lost 0-2 | -151542 |
| 9modern | 1160 | Muller, Greg (1571) | Lost 1-2 | -181524 |
| top | average opponent: 1622record: 3-4 | new rating: 1524 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 240 | Case, Ryan (1483) | Won 2-1 | +171544 |
| 3sealed | 46 | Wolff, Meghan (1484) | Won 2-0 | +171561 |
| 4sealed | 73 | DeTora, Melissa (1765) | Lost 1-2 | -151546 |
| 5sealed | 92 | Baker, Chris (1597) | Lost 0-2 | -171529 |
| 6sealed | 235 | Rossi, Adam (1520) | Won 2-1 | +181547 |
| 7sealed | 177 | Kudlick, Alex (1536) | Won 2-1 | +181565 |
| 8sealed | 90 | Tan, James (1645) | Lost 1-2 | -171548 |
| 9sealed | 117 | LeRoux, Colette (1596) | Lost 0-2 | -171531 |
| top | average opponent: 1578record: 4-4 | new rating: 1531 | ||
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 319 | Adams, Cody (1484) | Lost 1-2 | -191489 |
| 2standard | 322 | Garvey, Daniel (1481) | Lost 1-2 | -181471 |
| 3standard | 428 | Martin, Joel (1464) | Lost 1-2 | -181453 |
| 4standard | 472 | Monk, Dakota (1447) | Won 2-0 | +181471 |
| 5standard | 414 | Montgomery, Matthew (1465) | Won 2-0 | +181489 |
| 6standard | 348 | Ballew, Trey (1642) | Lost 1-2 | -151474 |
| 7standard | 347 | Honn, David (1463) | Won 2-0 | +171491 |
| 8standard | 296 | Caltagirone, Nick (1479) | Won 2-0 | +181509 |
| 9standard | 256 | McGraw, Matthew (1467) | Won 2-0 | +181527 |
| top | average opponent: 1488record: 5-4 | new rating: 1527 | ||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 448 | Lynn, Jacob (1500) | Won 2-0 | +181526 |
| 2sealed | 66 | Lazin, Jon (1518) | Lost 0-2 | -181508 |
| 3sealed | 288 | Eversoll, Stefan (1500) | Won 2-1 | +181526 |
| 4sealed | 348 | Heidenthal, Jason (1518) | Lost 1-2 | -191507 |
| 5sealed | 326 | Hartbarger, Lance (1715) | Won 2-0 | +221529 |
| 6sealed | 324 | Southworth, Jason (1475) | Lost 1-2 | -191510 |
| 7sealed | 262 | Ford, Justin (1462) | Won 2-0 | +171527 |
| 8sealed | 207 | Johnson, Jamie M (1451) | Lost 0-2 | -191508 |
| top | average opponent: 1517record: 4-4 | new rating: 1508 | ||
| Grand Prix Dallas-Fort Worth 2011 (MBS standard) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 183 | Beardsley, Kevin T (1500) | Lost 1-2 | -181485 |
| 2standard | 312 | Kincy, Jesse C (1482) | Won 2-1 | +181503 |
| 3standard | 280 | Oneal, Ryan (1500) | Won 2-1 | +181521 |
| 4standard | 255 | Borowicz, Brandon (1629) | Lost 0-2 | -161505 |
| 5standard | 337 | Cremeans, Brian (1500) | Won 2-0 | +181523 |
| 6standard | 219 | Eason, Anthony (1705) | Lost 0-2 | -151508 |
| top | average opponent: 1553record: 3-3 | new rating: 1508 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 539 | Jackson, Allen (1751) | Lost 0-2 | -141503 |
| 2extended | 576 | McKenzie, Chadwick (1550) | Lost 0-2 | -171486 |
| 3extended | 627 | Malone, Michael (1467) | Won 2-1 | +181504 |
| 4extended | 606 | Hickman, Steven (1479) | Won 2-0 | +171521 |
| 5extended | 559 | Maynor, Jacob U (1500) | Lost 1-2 | -181503 |
| top | average opponent: 1549record: 2-3 | new rating: 1503 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 140 | Sommer, Tristan (1500) | Lost 0-2 | -181482 |
| 2sealed | 286 | Donaldson, Chris (1487) | Draw 1-1 | 01482 |
| 3sealed | 277 | Spadafora, Brett (1482) | Won 2-0 | +181500 |
| 4sealed | 241 | McCartney, Daniel p (1498) | Won 2-0 | +181518 |
| 5sealed | 165 | Ashcraft, Stephen (1501) | Won 2-0 | +181536 |
| 6sealed | 104 | Stout, James (1500) | Lost 0-2 | -191517 |
| top | average opponent: 1495record: 3-2-1 | new rating: 1517 | ||