Staffel, Jonathan
Current rating: 1421
Record: 27-36-1
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 247 | Wells, Marc (1532) | Lost 0-2 | -161421 |
| top | record: 0-1 | new rating: 1421 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1392 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 810 | Werbelow, Chase (1446) | Won 2-0 | +191411 |
| 2modern | 318 | David, Daniel Eleazar (1420) | Won 2-1 | +181429 |
| 3modern | 471 | Porter, Martin (1585) | Lost 1-2 | -151414 |
| 4modern | 355 | Shellman, Tim (1489) | Won 2-1 | +191433 |
| 5modern | 204 | Lubiszewski, Jeffrey (1534) | Draw 1-1 | +21435 |
| 6modern | 320 | Oberg, Sean (1531) | Won 2-1 | +201455 |
| 7modern | 202 | Espiritu, Rigel (1482) | Lost 1-2 | -181437 |
| top | average opponent: 1498record: 4-2-1 | new rating: 1437 | ||
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 20 | Heine, Brian (1937) | Lost 0-2 | -101425 |
| 2sealed | 240 | Cook, Paul (1406) | Lost 1-2 | -181407 |
| 3sealed | 394 | Clinard, Jeffrey (1513) | Lost 1-2 | -161391 |
| 4sealed | 404 | Ramsey, Danny (1384) | Won 2-0 | +181409 |
| 5sealed | 349 | Mendenhall, Devin (1471) | Lost 0-2 | -171392 |
| top | average opponent: 1542record: 1-4 | new rating: 1392 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 754 | Jager, Cody (1545) | Won 2-1 | +201464 |
| 2modern | 480 | McNeely, Gary (1438) | Won 2-0 | +171481 |
| 3modern | 43 | Bell, Matthew (1516) | Lost 0-2 | -171464 |
| 4modern | 886 | Bogucki, Woodrow (1824) | Lost 0-2 | -121452 |
| 5modern | 875 | Stevenson, James (1451) | Won 2-0 | +181470 |
| 6modern | 844 | Suchecki, Thomas (1505) | Lost 0-2 | -171453 |
| 7modern | 948 | Sawyer, William (1468) | Lost 0-2 | -181435 |
| top | average opponent: 1535record: 3-4 | new rating: 1435 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 508 | Jayne, Brett (1681) | Lost 0-2 | -131425 |
| 2modern | 554 | Swanson, Matthew (1479) | Lost 0-2 | -171408 |
| 3modern | 937 | Hilbert, Jeffrey (1464) | Won 2-1 | +191427 |
| 4modern | 747 | Reyes, Josue (1369) | Won 2-0 | +171444 |
| 5modern | 785 | McGowen, Patrick (1498) | Lost 0-2 | -171427 |
| 6modern | 859 | Davila, Anthony (1478) | Won 2-1 | +191446 |
| 7modern | 528 | Liang, Zhi (1421) | Won 2-1 | +171463 |
| 8modern | 372 | Laverty, Jesse (1390) | Lost 1-2 | -191444 |
| top | average opponent: 1473record: 4-4 | new rating: 1444 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 388 | Lamping, William (1822) | Lost 0-2 | -121444 |
| 3standard | 713 | Casasola, Oscar (1640) | Lost 0-2 | -141430 |
| 4standard | 740 | Nollen, Dylan (1615) | Lost 0-2 | -151415 |
| 5standard | 360 | Puchkov, Michael (1463) | Won 2-0 | +191434 |
| 6standard | 597 | Gutierrez, Jonathan (1486) | Lost 0-2 | -171417 |
| 7standard | 632 | Sendaydiego, Curt (1512) | Won 2-0 | +201437 |
| 8standard | 501 | Zulaica, David (1482) | Won 2-0 | +181455 |
| 9standard | 398 | Antonovich, Darren (1508) | Lost 1-2 | -171438 |
| top | average opponent: 1566record: 3-5 | new rating: 1438 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 95 | Nagro, Jacob (1777) | Lost 0-0 | -131489 |
| 4modern | 344 | Jones, Will (1584) | Lost 0-2 | -171472 |
| 5modern | 301 | Bell, Cody (1432) | Lost 0-2 | -181454 |
| 6modern | 1059 | Pool, Jeremy (1480) | Won 2-0 | +181472 |
| 7modern | 316 | Carson, Oliver (1517) | Won 2-1 | +191491 |
| 8modern | 245 | Rankin, Michael (1505) | Lost 1-2 | -181473 |
| 9modern | 218 | Wright, Anthony (1502) | Lost 0-2 | -171456 |
| top | average opponent: 1542record: 2-5 | new rating: 1456 | ||
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 284 | Cunningham, Michael (1694) | Won 2-0 | +211529 |
| 2standard | 216 | Kauffman, Tommy (1446) | Lost 1-2 | -201509 |
| 3standard | 556 | Poncher, Samuel (1500) | Won 2-0 | +181527 |
| 4standard | 258 | Ramirez, Daniel (1771) | Lost 0-2 | -131514 |
| 5standard | 549 | Mendonca, Rafael (1796) | Won 2-0 | +231537 |
| 6standard | 331 | Ochoa, Raul (1546) | Won 2-1 | +181555 |
| 7standard | 148 | Murch, Andrew (1647) | Lost 0-2 | -171538 |
| 8standard | 236 | Bailey, Samson (1492) | Lost 1-2 | -181520 |
| 9standard | 221 | Dreher, Gregory (1533) | Lost 0-2 | -181502 |
| top | average opponent: 1603record: 4-5 | new rating: 1502 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 150 | Dufour, Terrence (1630) | Lost 1-2 | -161483 |
| 2sealed | 239 | Robledo, Carlos (1508) | Won 2-0 | +191502 |
| 3sealed | 182 | Brumsey, Peter (1441) | Won 2-0 | +161518 |
| 4sealed | 181 | Pham, Danny (1516) | Lost 0-2 | -181500 |
| 5sealed | 159 | Edvalson, Eric (1615) | Won 2-0 | +201520 |
| 6sealed | 104 | Baeckstrom, Andrew (1805) | Lost 0-2 | -121508 |
| top | average opponent: 1586record: 3-3 | new rating: 1508 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 182 | Lim, Teng Chek (1483) | Won 2-1 | +181518 |
| 2extended | 135 | Rodgers, Jamie (1518) | Lost 0-2 | -181500 |
| 3extended | 294 | gallagher, nick (1500) | Won 2-0 | +181518 |
| 4extended | 260 | Kolowith, Jeffrey (1523) | Lost 0-2 | -181500 |
| 5extended | 206 | Ascencio, John (1498) | Won 2-1 | +181518 |
| 6extended | 217 | Solari, Rafael (1459) | Lost 1-2 | -191499 |
| top | average opponent: 1497record: 3-3 | new rating: 1499 | ||