Hieronimus, James
Current rating: 1374
Record: 32-44-2
Grand Prix Atlanta 2015Grand Prix Atlanta 2016Grand Prix Indianapolis 2017Grand Prix Atlanta 2017Grand Prix Memphis 2018Grand Prix Seattle 2018 (legacy)Grand Prix Richmond 2018 (leg)Grand Prix Richmond 2018 (std)Grand Prix Atlanta 2018Grand Prix Memphis 2019Grand Prix Atlanta 2019Regional Championships Dallas 2023
| Regional Championships Dallas 2023 (pioneer) | starting rating: 1415 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 288 | Ascencio, John (1418) | Lost 0-2 | -181397 |
| 2pioneer | 487 | Schabel, Justin (1458) | Lost 0-2 | -161381 |
| 3pioneer | 457 | Stenstrom, Grant (1418) | Won 2-1 | +181399 |
| 4pioneer | 416 | Jones, Ethan (1722) | Lost 0-2 | -121387 |
| 5pioneer | 424 | Varnier, Matt (1670) | Lost 1-2 | -131374 |
| top | average opponent: 1537record: 1-4 | new rating: 1374 | ||
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1390 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 102 | Benedict, Travis (1565) | Won 2-1 | +221412 |
| 4legacy | 46 | Cooley, Kilian (1557) | Lost 1-2 | -161396 |
| 5legacy | 64 | Christy, David (1706) | Won 2-1 | +241420 |
| 6legacy | 108 | Keller, Cameron (1563) | Won 2-1 | +201440 |
| 7legacy | 20 | Cornell, Jason (1749) | Lost 1-2 | -121428 |
| 8legacy | 61 | Shukla, Neeraj (1750) | Lost 1-2 | -131415 |
| top | average opponent: 1648record: 3-3 | new rating: 1415 | ||
| Grand Prix Memphis 2019 (RNA standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 42 | Medlen, Joshua (1550) | Lost 0-2 | -161415 |
| 4standard | 141 | Dale, Matthew (1499) | Won 2-0 | +191434 |
| 5standard | 178 | Cochran, Hunter (1996) | Lost 0-2 | -81426 |
| 6standard | 260 | Pearson, Joseph (1382) | Lost 0-2 | -191407 |
| 7standard | 243 | Case, Cole (1493) | Lost 0-2 | -171390 |
| top | average opponent: 1584record: 1-4 | new rating: 1390 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 54 | Thomson, Gordon (1542) | Lost 0-2 | -171456 |
| 4modern | 486 | Muhlbock, Marc (1903) | Lost 0-2 | -101446 |
| 5modern | 399 | Goldstein, Max (1612) | Lost 1-2 | -151431 |
| top | average opponent: 1685record: 0-3 | new rating: 1431 | ||
| Grand Prix Richmond 2018 (std) (M19 standard) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 116 | Bailey, Tyler (1380) | Won 2-0 | +151518 |
| 4standard | 23 | Freeman, Chris (1353) | Lost 0-2 | -211497 |
| 5standard | 58 | Orange, Gregory (1935) | Lost 1-2 | -101487 |
| 6standard | 188 | Nguyen, David (1705) | Lost 1-2 | -141473 |
| top | average opponent: 1593record: 1-3 | new rating: 1473 | ||
| Grand Prix Richmond 2018 (leg) (legacy) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 165 | Mincucci, Nick (1453) | Lost 0-2 | -201538 |
| 4legacy | 226 | Clifford, Michael (1693) | Lost 1-2 | -151523 |
| 5legacy | 281 | Lee, Thomas (1389) | Lost 1-2 | -201503 |
| top | average opponent: 1511record: 0-3 | new rating: 1503 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 71 | Sears, Elisha (1487) | Lost 0-2 | -191505 |
| 3legacy | 602 | Williams, Kyle (1532) | Lost 1-2 | -171488 |
| 4legacy | 570 | Tullar, Kyren (1481) | Won 2-0 | +181506 |
| 5legacy | 502 | Lindner, Jeff (1659) | Draw 1-1 | +21508 |
| 6legacy | 475 | Hall, Christopher (1527) | Won 2-0 | +191527 |
| 7legacy | 346 | Schoonover, Kyle (1443) | Won 2-1 | +161543 |
| 8legacy | 240 | Chaudhry, Shann (1368) | Won 2-0 | +151558 |
| top | average opponent: 1500record: 4-2-1 | new rating: 1558 | ||
| Grand Prix Memphis 2018 (RIX standard) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 105 | David, Rheagan (1368) | Won 2-1 | +151582 |
| 3standard | 134 | Harkins, Cameron (1448) | Won 2-1 | +151597 |
| 4standard | 27 | Rasmussen, Ben (1791) | Lost 0-2 | -141583 |
| 5standard | 144 | Thomas, Justin (1424) | Lost 0-2 | -211562 |
| 6standard | 188 | Li, Lucas Muxi (1507) | Lost 1-2 | -191543 |
| 7standard | 308 | Thompson, Vince (1497) | Lost 1-2 | -191524 |
| top | average opponent: 1506record: 2-4 | new rating: 1524 | ||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 438 | Cooper, Christopher (1408) | Won 2-0 | +161554 |
| 2standard | 231 | Angeles, Victor (1495) | Lost 0-2 | -191535 |
| 3standard | 352 | Chou, Cosmo (1500) | Lost 1-2 | -191516 |
| 4standard | 594 | Nodine, Jordan (1482) | Draw 1-1 | 01516 |
| 5standard | 534 | Lu, Ziyi (1431) | Won 2-0 | +161532 |
| 6standard | 419 | Tanner, Chris (1465) | Won 2-1 | +171549 |
| 7standard | 310 | Brodie, Daniel (1628) | Lost 1-2 | -171532 |
| 8standard | 374 | Chandler, Charles (1508) | Won 2-0 | +181550 |
| 9standard | 281 | Corwin, Vincent (1522) | Won 2-1 | +171567 |
| top | average opponent: 1493record: 5-3-1 | new rating: 1567 | ||
| Grand Prix Indianapolis 2017 (HOU limited) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 51 | Rasener, Dustin (1500) | Won 2-0 | +181515 |
| 2sealed | 10 | McMurtrie, William (1518) | Won 2-0 | +181533 |
| 3sealed | 80 | Yeh, Chih-Cheng (1906) | Lost 1-2 | -121521 |
| 4sealed | 224 | Peretz, Michael (1563) | Lost 0-2 | -171504 |
| 5sealed | 355 | Woodring, Esteban (1488) | Won 2-0 | +181522 |
| 6sealed | 257 | Donovan, Michael (1538) | Lost 1-2 | -181504 |
| 7sealed | 388 | Frederick, Jacob (1670) | Won 2-0 | +211525 |
| 8sealed | 195 | Lennartz, Eric (1385) | Won 2-1 | +161541 |
| 9sealed | 138 | Criss, Ronald (1614) | Won 2-0 | +191560 |
| 10draft | 112 | Krot, Hunter (1586) | Lost 1-2 | -181542 |
| 11draft | 74 | Kindler, Jim (1302) | Won 2-0 | +141556 |
| 12draft | 98 | Roth, Ken (1542) | Won 2-1 | +181574 |
| 13draft | 134 | Ackerman, Nicholas (1586) | Lost 0-2 | -181556 |
| 14draft | 106 | Randall, Nick (1566) | Lost 0-2 | -181538 |
| top | average opponent: 1554record: 8-6 | new rating: 1538 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 647 | Duan, Ceyao (1552) | Lost 0-2 | -161429 |
| 2sealed | 1017 | Tran, Viet (1745) | Won 2-0 | +231452 |
| 3sealed | 1163 | Bonilla, Byron (1475) | Won 2-1 | +191471 |
| 4sealed | 725 | Berry, Stephen (1622) | Won 2-0 | +211492 |
| 5sealed | 846 | Molina, Mario (1634) | Lost 0-2 | -161476 |
| 6sealed | 760 | Evans, David (1529) | Won 2-1 | +191495 |
| 7sealed | 843 | Lacoste, Steven (1557) | Won 2-0 | +191514 |
| 8sealed | 710 | Magalhaes, Edgar (1697) | Won 2-0 | +221536 |
| 9sealed | 578 | Michel, Gregory (1854) | Lost 0-2 | -131523 |
| 10draft | 847 | Truong, Andy (1678) | Won 2-1 | +211544 |
| 11draft | 1011 | Hatchel, Tyler (1756) | Lost 0-2 | -141530 |
| 12draft | 1030 | Lo, William (1672) | Lost 0-2 | -161514 |
| 13draft | 1026 | Jaskolka, Michael (1530) | Lost 0-2 | -171497 |
| top | average opponent: 1639record: 7-6 | new rating: 1497 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 556 | Pothering, Ryan (1427) | Lost 1-2 | -191481 |
| 2sealed | 731 | Giering, Cole (1497) | Lost 0-2 | -181463 |
| 3sealed | 927 | Frederick, Jared (1464) | Lost 0-2 | -181445 |
| top | average opponent: 1462record: 0-3 | new rating: 1445 | ||