Harlan, Peter
Current rating: 1553
Record: 21-19-2
| Grand Prix Columbus 2019 (modern) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 128 | Krawczyk, Derek (1500) | Won 2-0 | +171574 |
| 2modern | 101 | Ramsey, Nathan (1426) | Lost 1-2 | -211553 |
| 3modern | 266 | Floreancig, Benjamin (1501) | Won 2-0 | +171570 |
| 4modern | 195 | Kurty, Nathaniel (1490) | Lost 1-2 | -201550 |
| 5modern | 231 | Hobbs, Jonathan (1739) | Lost 1-2 | -141536 |
| 6modern | 203 | Vallie, Josiah (1570) | Won 2-0 | +191555 |
| 7modern | 175 | Spry, Richard (1447) | Won 2-0 | +161571 |
| 8modern | 134 | Fogt, Garrison (1575) | Lost 1-2 | -181553 |
| top | average opponent: 1531record: 4-4 | new rating: 1553 | ||
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 32 | Bailey, Jeffrey (1514) | Won 2-0 | +181501 |
| 2legacy | 116 | Ramsey, Nathan (1435) | Won 2-1 | +171518 |
| 3legacy | 186 | Ambler, Kevin (1696) | Won 2-0 | +211539 |
| 4legacy | 44 | Anderson, Mitchell (1552) | Won 2-1 | +191558 |
| 5legacy | 1 | Hayes, Robert (1693) | Lost 0-2 | -161542 |
| 6legacy | 134 | Younger, Alejandro (1549) | Won 2-0 | +181560 |
| 7legacy | 19 | Hammes, James (1531) | Won 2-0 | +181578 |
| 8legacy | 14 | Sagraves, Maximilian (1560) | Won 2-0 | +171595 |
| 9legacy | 26 | Martinez, Angel (1705) | Lost 0-2 | -161579 |
| 10legacy | 25 | Simon, Eric (1579) | Lost 1-2 | -181561 |
| 11legacy | 57 | Das, Anuraag (2037) | Lost 1-2 | -101551 |
| 12legacy | 72 | Bosserman, Alexander (1718) | Won 2-1 | +211572 |
| 13legacy | 47 | Chilicky, Robert (1565) | Lost 1-2 | -181554 |
| 14legacy | 58 | Caseman, Robert (1608) | Won 2-1 | +191573 |
| 15legacy | 60 | Vook, Matthew (1643) | Lost 1-2 | -161557 |
| top | average opponent: 1626record: 9-6 | new rating: 1557 | ||
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 217 | Mee, Jerry (1461) | Lost 0-2 | -191499 |
| 2legacy | 338 | De Sousa, Mathew (1421) | Lost 0-2 | -191480 |
| 3legacy | 443 | Walz, Bruce (1421) | Won 2-0 | +171497 |
| 4legacy | 420 | Bakkala, Tony (1525) | Won 2-0 | +181515 |
| 5legacy | 279 | Ascott, Ryan (1665) | Lost 1-2 | -151500 |
| 6legacy | 350 | Fleming, Kyle (1484) | Won 2-0 | +181518 |
| 7legacy | 225 | Schulz, Timothy (1508) | Lost 1-2 | -181500 |
| 8legacy | 240 | Kerr, Stephen (1565) | Lost 1-2 | -171483 |
| top | average opponent: 1506record: 3-5 | new rating: 1483 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 198 | Wochinski, Derek (1500) | Lost 0-2 | -191520 |
| 2legacy | 187 | DeFazio, Mike (1482) | Draw 1-1 | -11519 |
| 3legacy | 234 | Magooch, Paul M (1482) | Draw 1-1 | -11518 |
| top | average opponent: 1488record: 0-1-2 | new rating: 1518 | ||
| Grand Prix Cleveland 2002 (Odyssey block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 208 | Summers, Andrew (1500) | Won 2-1 | +181518 |
| 2block | 3 | Ehrhart, Tammy (1486) | Won 2-0 | +171535 |
| 3block | 5 | Herzberg, Scott (1526) | Won 2-1 | +181553 |
| 4block | 27 | Jensen, William (1887) | Lost 1-2 | -121541 |
| 5block | 46 | Stoddard, Samuel (1505) | Won 2-1 | +171558 |
| 6block | 70 | McGuffin, Max (1560) | Won 2-0 | +191577 |
| 7block | 41 | Dove, Michael (1563) | Lost 0-2 | -191558 |
| 8block | 63 | McDonough, Anthony (1464) | Lost 1-2 | -191539 |
| top | average opponent: 1562record: 5-3 | new rating: 1539 | ||