McDonald, Marcus
Current rating: 1547
Record: 13-11
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 1511 | Vernon, Jared (1517) | Won 2-0 | +171568 |
| 3legacy | 1445 | Martin, Pete (1479) | Lost 1-2 | -191549 |
| 4legacy | 1733 | Adams, Lucas (1584) | Won 2-0 | +181567 |
| 5legacy | 1517 | Anderson, Travis (1453) | Won 2-1 | +161583 |
| 6legacy | 1566 | Krause, Nicholas (1565) | Lost 1-2 | -181565 |
| 7legacy | 1629 | Laufer, Ben (1578) | Lost 0-2 | -181547 |
| top | average opponent: 1529record: 3-3 | new rating: 1547 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1577 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 796 | Geloso, Valerie (1500) | Lost 1-2 | -191558 |
| 2modern | 1035 | Garito, Michael (1482) | Won 2-1 | +161574 |
| 3modern | 946 | Burke, Daniel (1447) | Lost 1-2 | -201554 |
| 4modern | 1204 | Cloke, Justin (1516) | Won 2-0 | +171571 |
| 5modern | 1013 | Boody, Charles (1433) | Lost 0-2 | -201551 |
| top | average opponent: 1476record: 2-3 | new rating: 1551 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 211 | Doehlert, Spencer (1577) | Won 2-0 | +191519 |
| 5sealed | 3 | Chen, Jiayi (1725) | Lost 0-2 | -141505 |
| 6sealed | 239 | Mason, Sky (1541) | Lost 1-2 | -171488 |
| 7sealed | 229 | Donahue, Matthew R (1537) | Won 2-1 | +191507 |
| 8sealed | 229 | Remeika, John (1573) | Won 2-0 | +191526 |
| 9sealed | 166 | Clark, Adam [USA] (1563) | Won 2-1 | +191545 |
| 10sealed | 97 | Kikuchi-Wellman, Zen (1561) | Won 2-0 | +181563 |
| 11draft | 102 | Portaro, Alessandro (1841) | Won 2-1 | +231586 |
| 12draft | 9 | Brock, Kyle (1591) | Won 2-0 | +181604 |
| 13draft | 10 | Asselin, Philippe (1690) | Lost 0-2 | -171587 |
| 14draft | 13 | Bogner, Ryan (1796) | Lost 1-2 | -141573 |
| 15draft | 90 | Froehlich, Whit (1634) | Won 2-0 | +191592 |
| 16draft | 50 | O'Brien, Matt (1750) | Lost 1-2 | -151577 |
| top | average opponent: 1645record: 8-5 | new rating: 1577 | ||