Harakidas, John
Current rating: 1613
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 638 | McVety, Max (1956) | Lost 1-2 | -121618 |
| 2pioneer | 635 | Berenotto, Dominic (1482) | Won 2-1 | +151633 |
| 3pioneer | 416 | Dunn, Sean (1562) | Lost 0-2 | -191614 |
| 4pioneer | 415 | Villacis, Jeffrey (1490) | Lost 0-2 | -201594 |
| 5pioneer | 536 | DeLozier, Dawn (1577) | Won 2-1 | +181612 |
| 6pioneer | 375 | Rostel, Ryan (1482) | Won 2-0 | +151627 |
| 7pioneer | 318 | Malka, Sol (1835) | Lost 0-2 | -141613 |
| top | average opponent: 1626record: 3-4 | new rating: 1613 | ||
| Grand Prix New Jersey 2019 (RNA limited) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 244 | Singer, Sean (1633) | Lost 1-2 | -161535 |
| 3sealed | 465 | Jones Sr, Jonathan (1483) | Won 2-0 | +171552 |
| 4sealed | 277 | Schrantz, Mac (1819) | Lost 0-2 | -141538 |
| 5sealed | 392 | Fairchild, Eric (1554) | Won 2-1 | +191557 |
| 6sealed | 300 | Hartman, Dan (1554) | Won 2-0 | +181575 |
| 7sealed | 313 | Dooling, Matthew (1520) | Won 2-1 | +171592 |
| 8sealed | 179 | Singer, Ryan (1513) | Won 2-0 | +161608 |
| 9sealed | 66 | Gareau, Philippe (1740) | Won 2-1 | +211629 |
| 10draft | 82 | Taylor, Kyle (1533) | Won 2-1 | +161645 |
| 11draft | 77 | Tsang, Gabriel (1931) | Lost 1-2 | -131632 |
| 12draft | 23 | Almon, Sean (1580) | Lost 1-2 | -191613 |
| 13draft | 25 | McMahan, Brian (1576) | Won 2-1 | +171630 |
| 14draft | 98 | Genuario, Robert (1652) | Won 2-1 | +191649 |
| 15draft | 105 | Kirkorian, Andre (1618) | Lost 0-2 | -191630 |
| top | average opponent: 1622record: 9-5 | new rating: 1630 | ||
| Grand Prix Hartford 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 21 | Bromwich, Mark (1500) | Won 2-0 | +181518 |
| 2modern | 106 | Cohen, Adam (1686) | Won 2-0 | +211539 |
| 3modern | 35 | Macdonald, James (1536) | Lost 0-2 | -181521 |
| 4modern | 474 | Cummings, Colin (1517) | Won 2-0 | +181539 |
| 5modern | 363 | Shen, Kent (1729) | Won 2-0 | +211560 |
| 6modern | 231 | Eapen, Roshen (1649) | Lost 1-2 | -161544 |
| 7modern | 160 | Yeh, Chih-Cheng (1996) | Won 2-1 | +261570 |
| 8modern | 118 | Horton, Joseph (1537) | Lost 0-2 | -191551 |
| top | average opponent: 1644record: 5-3 | new rating: 1551 | ||