Guthrie, Ian
Current rating: 1489
Record: 15-17-3
| Grand Prix Omaha 2017 (AKH standard) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 231 | Pointer, Ben (1500) | Won 2-0 | +181485 |
| 2standard | 129 | Marmelat, Vivien (1517) | Won 2-0 | +191504 |
| 3standard | 7 | Humphreys, Isaac (1536) | Draw 1-1 | +11505 |
| 4standard | 96 | Grabau, Joe (1534) | Lost 1-2 | -181487 |
| 5standard | 175 | Johnson, Tony (1454) | Won 2-0 | +171504 |
| 6standard | 112 | Goolsby, Patrick (1535) | Lost 0-2 | -171487 |
| 7standard | 174 | Wilhelm, Thomas (1537) | Lost 0-2 | -171470 |
| 8standard | 230 | Scioscia, Rusty (1500) | Won 2-0 | +181488 |
| 9standard | 172 | Foster, Hewton (1527) | Draw 1-1 | +11489 |
| top | average opponent: 1515record: 4-3-2 | new rating: 1489 | ||
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 169 | Dodge, Chris (1500) | Lost 1-2 | -171464 |
| 2modern | 778 | Adams, Ethan (1448) | Won 2-0 | +171481 |
| 3modern | 443 | Wilson, Jacob [USA] (1558) | Lost 0-2 | -161465 |
| 4modern | 779 | Howard, Brayden (1483) | Lost 0-2 | -181447 |
| 5modern | 801 | Green, Thomas (1410) | Won 2-0 | +171464 |
| 6modern | 683 | Medrano, Julian (1480) | Won 2-0 | +191483 |
| 7modern | 573 | Hernandez, Luis (1448) | Won 2-1 | +171500 |
| 8modern | 433 | Goff, Ricky (1564) | Lost 1-2 | -171483 |
| 9modern | 479 | Navarro, Andrew (1568) | Lost 1-2 | -161467 |
| top | average opponent: 1496record: 4-5 | new rating: 1467 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 227 | Godissart, Matt (1518) | Won 2-1 | +191511 |
| 3modern | 279 | Calhoun, Christopher (1546) | Lost 1-2 | -181493 |
| 4modern | 631 | Somers, Stu (1595) | Lost 0-2 | -161477 |
| 5modern | 684 | Waldron, Alexander (1500) | Won 2-1 | +191496 |
| 6modern | 615 | Hawley, Adam (1571) | Lost 0-2 | -171479 |
| 7modern | 674 | Nguyen, Van (1488) | Lost 0-2 | -181461 |
| 8modern | 571 | Hilson, Ian (1561) | Won 2-0 | +201481 |
| 9modern | 411 | Gruning, Anton (1497) | Draw 1-1 | 01481 |
| top | average opponent: 1535record: 3-4-1 | new rating: 1481 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1040 | Potter, Aaron (1606) | Lost 1-2 | -161484 |
| 2modern | 1060 | Kaplan, Joshua (1431) | Won 2-1 | +171501 |
| 3modern | 1047 | Bonar, Edward (1498) | Lost 0-0 | -181483 |
| 4modern | 1064 | Carter, Ethan (1482) | Won 2-0 | +181501 |
| 5modern | 1044 | Smith, Barry (1587) | Lost 0-2 | -171484 |
| 6modern | 1055 | Dutcher, Alec (1448) | Won 2-1 | +181502 |
| 7modern | 1044 | Blackmor, Jason (1570) | Won 2-1 | +191521 |
| 8modern | 54 | Smith, Robert RC (1869) | Lost 0-2 | -121509 |
| 9modern | 1028 | Nguyen, Van (1569) | Lost 0-2 | -171492 |
| top | average opponent: 1562record: 4-5 | new rating: 1492 | ||