Williams, Harold
Current rating: 1572
Record: 21-17-2 (GP) / 6-8 (professional)
| Grand Prix Columbus 2016 (legacy) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 78 | Marx, Kyle (1451) | Lost 0-2 | -211565 |
| 2legacy | 496 | Jones, Kelson (1448) | Won 2-1 | +161581 |
| 3legacy | 720 | Aguilar, Patrick (1500) | Lost 1-2 | -191562 |
| 4legacy | 637 | Barrall, Ryne (1481) | Won 2-1 | +161578 |
| 5legacy | 584 | Van Vliet III, Leonard (1399) | Won 2-0 | +151593 |
| 6legacy | 318 | Klemic, Michael (1544) | Won 2-1 | +171610 |
| 7legacy | 374 | Gray, Jake (1576) | Lost 0-2 | -181592 |
| 8legacy | 343 | Gosnell, James (1490) | Lost 1-2 | -201572 |
| top | average opponent: 1486record: 4-4 | new rating: 1572 | ||
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 334 | Santiago, Jason (1464) | Won 2-0 | +151630 |
| 2modern | 1022 | Beavers, Garth (1518) | Lost 0-2 | -201610 |
| 3modern | 321 | Finley, Joseph (1488) | Won 0-0 | +161626 |
| 4modern | 267 | Holmes, Jacob [USA] (1521) | Lost 1-2 | -201606 |
| 5modern | 1047 | Martin, Vincent (1499) | Lost 1-2 | -201586 |
| top | average opponent: 1498record: 2-3 | new rating: 1586 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1662 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 769 | Korycinski, Craig (1536) | Won 2-1 | +151677 |
| 3legacy | 791 | Nowakowski, Brian (1632) | Lost 1-2 | -191658 |
| 4legacy | 870 | Smale, Harlie (1513) | Lost 1-2 | -201638 |
| 5legacy | 933 | Duprez, Dean (1584) | Won 2-1 | +171655 |
| 6legacy | 854 | Webster, Aaron (1584) | Lost 0-2 | -191636 |
| 7legacy | 868 | Azulay, Adam (1471) | Lost 0-2 | -211615 |
| top | average opponent: 1554record: 2-4 | new rating: 1615 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 64 | Schelling, Joseph (1502) | Lost 1-2 | -191537 |
| 3sealed | 217 | Garcia, Simon (1466) | Won 2-0 | +171554 |
| 4sealed | 209 | Hatter, Albert (1541) | Won 2-1 | +171571 |
| 5sealed | 78 | Brewster, John (1504) | Won 2-1 | +171588 |
| 6sealed | 62 | Leggat, Jim (1537) | Won 2-1 | +171605 |
| 7sealed | 32 | Lytle, Tyler (1826) | Won 2-1 | +221627 |
| 8sealed | 21 | Arnaud, John (1593) | Won 2-1 | +181645 |
| 9sealed | 19 | Calcano, Christian (1646) | Won 2-0 | +181663 |
| 10draft | 63 | Heiser, Doug (1691) | Lost 1-2 | -181645 |
| 11draft | 56 | Henson, Hakeem (1590) | Won 2-1 | +171662 |
| 12draft | 9 | Jordan, Michael (1621) | Lost 0-2 | -191643 |
| 13draft | 56 | Wise, James (1633) | Won 2-0 | +181661 |
| 14draft | 13 | Van Dyke, Michael (1694) | Lost 0-2 | -171644 |
| 15draft | 31 | Cena, Salvador (1632) | Won 2-1 | +181662 |
| top | average opponent: 1605record: 10-4 | new rating: 1662 | ||
| Grand Prix San Antonio 2012 (RTR standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 65 | Hubbard, Alan (1675) | Won 2-0 | +211539 |
| 4standard | 78 | Long, Matthew 2 (1546) | Lost 1-2 | -181521 |
| 5standard | 88 | Clarkson, Emmett (1535) | Lost 1-2 | -171504 |
| 6standard | 133 | Tietze, Maxwell (1918) | Won 2-0 | +251529 |
| 7standard | 91 | Palmer, Matthew (1535) | Won 2-0 | +181547 |
| 8standard | 96 | Shenhar, Shahar (2013) | Draw 1-1 | +81555 |
| 9standard | 78 | Edwards, Jeremiah (1616) | Draw 1-1 | +11556 |
| top | average opponent: 1691record: 3-2-2 | new rating: 1556 | ||
| Pro Tour Return to Ravnica (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 120 | Fritz, Austin (1612) | Lost 1-2 | -161484 |
| 2modern | 164 | Aintrazi, Ali (1856) | Won 2-1 | +251509 |
| 3modern | 69 | Rizzo, Jonathan (1592) | Won 2-0 | +191528 |
| 4modern | 74 | Darras, Alexandre (1848) | Lost 0-2 | -121516 |
| 5modern | 67 | Winter, Dillon (1534) | Lost 1-2 | -181498 |
| 6draft | 32 | Cox, Patrick (1811) | Won 2-1 | +241522 |
| 7draft | 77 | Nelson, Brad (1935) | Lost 0-2 | -111511 |
| 8draft | 105 | Sheng, Michael (1494) | Won 2-1 | +171528 |
| 9draft | 14 | Frantuma, Marco (1776) | Won 2-0 | +231551 |
| 10draft | 72 | Marr, Mat (1819) | Won 2-0 | +231574 |
| 11draft | 47 | Ashton, Thomas (1967) | Lost 0-2 | -121562 |
| 12modern | 69 | Maynard, Pascal (1869) | Lost 0-2 | -121550 |
| 13modern | 91 | Schunemann, Timo (1743) | Lost 0-2 | -151535 |
| 14modern | 92 | Jacob, Maxwell (1594) | Lost 1-2 | -171518 |
| top | average opponent: 1746record: 6-8 | new rating: 1518 | ||