Porter, David
Current rating: 1464
Record: 6-8
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 270 | Andorf, Andrew (1581) | Won 2-0 | +191503 |
| 2modern | 362 | Hirshowitz, Leo (1431) | Lost 1-2 | -191484 |
| 3modern | 964 | Rosario, Edgar (1567) | Lost 0-2 | -161468 |
| 4modern | 1157 | Olgado, Joseph (1417) | Lost 1-2 | -191449 |
| 5modern | 1278 | Fesler, Soren (1363) | Won 2-1 | +161465 |
| 6modern | 1012 | Diab, Kenan (1465) | Won 2-1 | +181483 |
| 7modern | 917 | Djiguerian, Aram (1428) | Lost 0-2 | -191464 |
| average opponent: 1465record: 3-4 | new rating: 1464 | |||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 53 | McAlpine, Daniel (1517) | Lost 1-2 | -181482 |
| 2modern | 824 | Halvorson, Sven (1483) | Lost 1-2 | -181464 |
| 3modern | 932 | McCulley, Lance (1429) | Won 2-0 | +181482 |
| 4modern | 743 | Freytag, Eric (1550) | Lost 0-2 | -171465 |
| 5modern | 926 | Argueta, Isaac (1473) | Won 2-1 | +181483 |
| 6modern | 728 | Barton, Cory (1481) | Won 2-1 | +181501 |
| 7modern | 562 | Chavez, Anthony (1532) | Lost 1-2 | -171484 |
| average opponent: 1495record: 3-4 | new rating: 1484 | |||