Piles, James
Current rating: 1388
Record: 34-41-3
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 216 | Moorman, Zachary (1500) | Lost 1-2 | -161395 |
| 2standard | 256 | Preston, Brian (1459) | Won 2-0 | +191414 |
| 3standard | 206 | Fulgium, James (1672) | Lost 0-2 | -141400 |
| 4standard | 229 | Lyons, Greg (1507) | Won 2-1 | +201420 |
| 5standard | 160 | Cox, Andrew (1397) | Lost 0-2 | -181402 |
| 6standard | 211 | Kathol, Trenton (1484) | Won 2-0 | +191421 |
| 7standard | 171 | Desjardins, Emerson (1489) | Lost 0-2 | -161405 |
| 8standard | 134 | Dent, Allen (1481) | Lost 0-2 | -171388 |
| top | average opponent: 1499record: 3-5 | new rating: 1388 | ||
| Grand Prix Dallas-Fort Worth 2019 (modern) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 19 | Mares, Conor (1555) | Lost 1-2 | -171462 |
| 2modern | 461 | Blackmor, Jason (1631) | Lost 0-2 | -151447 |
| 3modern | 515 | McGinty, Connery (1463) | Won 2-0 | +181465 |
| 4modern | 469 | Petro, Dan (1528) | Lost 1-2 | -171448 |
| 5modern | 511 | Myhre, Professor (1462) | Lost 1-2 | -171431 |
| 6modern | 457 | Wyatt, CJ (1337) | Lost 0-2 | -201411 |
| top | average opponent: 1496record: 1-5 | new rating: 1411 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 545 | Marinkovic, Goran (1453) | Lost 0-2 | -191476 |
| 2sealed | 504 | Lecrivain, Alexander (1446) | Won 2-1 | +171493 |
| 3sealed | 674 | Statz, Matthew (1500) | Won 2-0 | +181511 |
| 4sealed | 554 | Miller, Austin (1667) | Draw 1-1 | +31514 |
| 5sealed | 415 | Kell, Clovis (1444) | Lost 0-2 | -191495 |
| 6sealed | 514 | Jacobson, Jeremy (1560) | Won 2-0 | +191514 |
| 7sealed | 384 | Rogers, Dane (1519) | Lost 0-2 | -181496 |
| 8sealed | 329 | Osuna, Eduardo (1516) | Lost 0-2 | -171479 |
| top | average opponent: 1513record: 3-4-1 | new rating: 1479 | ||
| Grand Prix Phoenix 2018 (modern) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 30 | Betts, Jeremy (1343) | Lost 1-2 | -221512 |
| 2modern | 380 | Whitaker, Carter (1482) | Won 2-1 | +181530 |
| 3modern | 309 | Koenig, Ryan (1676) | Lost 1-2 | -161514 |
| 4modern | 550 | Stevenson, Derek (1424) | Lost 0-2 | -191495 |
| top | average opponent: 1481record: 1-3 | new rating: 1495 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1588 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 149 | Farias, Andrew (1523) | Lost 0-2 | -201568 |
| 2sealed | 598 | Ballance, Will (1487) | Won 2-0 | +171585 |
| 3sealed | 737 | Ewing, Conner (1486) | Lost 1-2 | -201565 |
| 4sealed | 945 | Pool, Sage (1482) | Won 2-1 | +171582 |
| 5sealed | 798 | Hollman, Mandy (1473) | Lost 0-2 | -201562 |
| 6sealed | 772 | Beg, Hollie (1325) | Won 2-1 | +131575 |
| 7sealed | 631 | Nelson, John (1317) | Lost 1-2 | -221553 |
| 8sealed | 566 | Pierce, Brandon (1482) | Lost 0-2 | -191534 |
| top | average opponent: 1447record: 3-5 | new rating: 1534 | ||
| Grand Prix Albuquerque 2016 (SOI limited) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 44 | Figueroa, Carlos (1518) | Won 2-1 | +171584 |
| 3sealed | 83 | Vasquez, Gustavo (1469) | Won 2-0 | +161600 |
| 4sealed | 62 | Caron, Matt (1581) | Lost 1-2 | -181582 |
| 5sealed | 129 | Jordan, Michael (1603) | Won 2-1 | +181600 |
| 6sealed | 158 | Sias, Eric (1499) | Won 2-0 | +161616 |
| 7sealed | 94 | Medeiros, Kevin (1787) | Lost 0-2 | -151601 |
| 8sealed | 125 | Feng, Hans (1709) | Won 2-0 | +201621 |
| 9sealed | 59 | Salmons, George (1546) | Lost 1-2 | -191602 |
| 10draft | 129 | Inada, Scott (1552) | Draw 1-1 | -11601 |
| 11draft | 127 | Tamblyn, Mitchell (1672) | Lost 1-2 | -171584 |
| 12draft | 162 | Clark, Daniel (1593) | Lost 0-2 | -181566 |
| 13draft | 38 | Ortiz, Lance (1558) | Lost 1-2 | -181548 |
| 14draft | 91 | Pastorinni, Luckas (1693) | Won 2-0 | +211569 |
| 15draft | 99 | Pernankil, Avenash (1610) | Won 2-0 | +191588 |
| top | average opponent: 1599record: 7-6-1 | new rating: 1588 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 169 | O'Berry, Danny (1428) | Won 2-1 | +161549 |
| 3sealed | 49 | Rothenbaum, Kyle (1501) | Lost 1-2 | -191530 |
| 4sealed | 315 | Goda, Chayse (1518) | Won 2-0 | +181548 |
| 5sealed | 122 | Douglas, Easton (1642) | Lost 1-2 | -171531 |
| 6sealed | 195 | Adams, Jonathan (1527) | Won 2-0 | +181549 |
| 7sealed | 164 | Peace, John (1500) | Won 2-0 | +171566 |
| 8sealed | 115 | Bollin, Brian (1608) | Won 2-1 | +191585 |
| 9sealed | 74 | Reksten, Stefano (1572) | Lost 1-2 | -181567 |
| top | average opponent: 1537record: 5-3 | new rating: 1567 | ||
| Grand Prix Los Angeles 2014 (KTK standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 78 | Frazier, Gene (1529) | Won 2-0 | +191537 |
| 3standard | 20 | Castro, Joseph (1536) | Lost 0-2 | -181519 |
| 4standard | 399 | Ellin Carrillo, Edward (1482) | Won 2-1 | +171536 |
| 5standard | 217 | Kleinschmidt, Karl (1519) | Won 2-0 | +181554 |
| 6standard | 186 | Jones, Glenn (1702) | Lost 0-2 | -161538 |
| 7standard | 296 | Lee Kwai, Josh (1541) | Won 2-0 | +181556 |
| 8standard | 179 | Petroff, Steven (1570) | Won 2-0 | +191575 |
| 9standard | 109 | Vallejo Pacheco, Omar (1734) | Won 2-0 | +211596 |
| 10standard | 95 | Diaz, Ricardo [USA] (1574) | Won 2-0 | +171613 |
| 11standard | 27 | Chen, Cliff (1693) | Lost 0-2 | -161597 |
| 12standard | 70 | Mariscal, Carlos (1571) | Lost 1-2 | -191578 |
| 13standard | 85 | Juza, Martin (1942) | Lost 0-2 | -121566 |
| 14standard | 74 | Perez, Ruben (1721) | Lost 1-2 | -151551 |
| 15standard | 83 | Loshbaugh, Christopher (1522) | Lost 0-2 | -181533 |
| top | average opponent: 1617record: 7-7 | new rating: 1533 | ||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 115 | Pitsch, Kevin (1518) | Lost 0-2 | -181482 |
| 3standard | 509 | Yates, Thomas (1465) | Won 2-0 | +181500 |
| 4standard | 422 | Ogami, Kenneth (1501) | Draw 1-1 | 01500 |
| 5standard | 305 | Ryan, Tj (1482) | Lost 0-2 | -181482 |
| 6standard | 414 | Boydston, David (1502) | Lost 1-2 | -181464 |
| 7standard | 387 | Benke, Joseph (1483) | Won 2-1 | +181482 |
| 8standard | 287 | Zamora, Michael (1503) | Won 2-0 | +191501 |
| 9standard | 262 | Garraffa, Alfred (1481) | Won 2-0 | +171518 |
| top | average opponent: 1492record: 4-3-1 | new rating: 1518 | ||