Lantz, Justin
Current rating: 1609
Record: 19-13
| Grand Prix Detroit 2013 (modern) | starting rating: 1579 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 194 | Garrick, Vincent (1500) | Won 2-1 | +161595 |
| 2modern | 277 | Shunta, Cameron (1532) | Won 0-0 | +171612 |
| 3modern | 44 | Rogerson, Ian (1708) | Won 2-0 | +201632 |
| 4modern | 124 | Wilkinson, Adam (1565) | Won 2-0 | +171649 |
| 5modern | 43 | Wolloch, Sam (1642) | Lost 1-2 | -191630 |
| 6modern | 158 | Kelso, Mark (1509) | Won 2-1 | +161646 |
| 7modern | 34 | Golembiewski, Jason R (1701) | Lost 0-2 | -171629 |
| 8modern | 200 | Maggard, Jakob (1536) | Lost 1-2 | -201609 |
| top | average opponent: 1587record: 5-3 | new rating: 1609 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 83 | Kelahan, Seamus (1493) | Won 2-1 | +171555 |
| 3standard | 229 | Fisk, William (1609) | Won 2-1 | +191574 |
| 4standard | 123 | DiMaio, JT (1536) | Won 2-0 | +181592 |
| 5standard | 31 | Sui, Xin (1701) | Won 2-1 | +201612 |
| 6standard | 18 | Gervato, Matthew (1559) | Lost 0-2 | -191593 |
| 7standard | 46 | Hall, Zack (1819) | Lost 0-2 | -141579 |
| 8standard | 194 | Fischer, Nathan (1593) | Won 2-1 | +181597 |
| 9standard | 118 | Hess, James (1568) | Lost 1-2 | -181579 |
| top | average opponent: 1610record: 5-3 | new rating: 1579 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 231 | Looney, Ruddy (1520) | Won 2-1 | +181536 |
| 2standard | 95 | Brisentine, Justin C (1436) | Won 2-0 | +161552 |
| 3standard | 137 | Burroughs, Darrell (1500) | Won 2-0 | +171569 |
| 4standard | 98 | Frank, Harry (1397) | Won 2-0 | +151584 |
| 5standard | 61 | Yurchick, Adam (1981) | Lost 0-2 | -111573 |
| 6standard | 203 | Detisch, Marc (1559) | Lost 1-2 | -181555 |
| 7standard | 276 | Allen, Travis (1427) | Won 2-0 | +151570 |
| 8standard | 107 | Janse, Love (1742) | Lost 0-2 | -151555 |
| 9standard | 178 | Boggemes, Kyle (1603) | Lost 0-2 | -171538 |
| top | average opponent: 1574record: 5-4 | new rating: 1538 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 64 | Kolongowski, Matthew (1500) | Won 2-1 | +181518 |
| 2standard | 143 | Giaquinto, Frank (1537) | Won 2-1 | +181536 |
| 3standard | 13 | van Mourik, Alejandro (1500) | Won 2-0 | +181554 |
| 4standard | 102 | Hayes, Ben (1600) | Won 2-1 | +191573 |
| 5standard | 20 | Nyberg, Michael (1577) | Lost 1-2 | -181555 |
| 6standard | 66 | Pawlik, Ryan (1543) | Lost 1-2 | -191536 |
| 7standard | 181 | Blystone, David (1504) | Lost 1-2 | -181518 |
| top | average opponent: 1537record: 4-3 | new rating: 1518 | ||