Marvuglio, David
Current rating: 1503
| Regional Championships Atlanta 2023 (pioneer) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 180 | Meyer, Ivan (1569) | Won 2-0 | +201473 |
| 2pioneer | 95 | Hellewell, Jeremiah (1518) | Won 2-0 | +191492 |
| 3pioneer | 57 | Jakobovits, Julian (1642) | Lost 0-2 | -151477 |
| 4pioneer | 150 | Campo, Terrence (1916) | Won 2-1 | +251502 |
| 5pioneer | 112 | Moughon, Evart (1824) | Lost 1-2 | -121490 |
| 6pioneer | 145 | Lopez, Andrew (1953) | Lost 0-2 | -101480 |
| 7pioneer | 247 | Wakefield, Benjamin (1512) | Won 2-1 | +181498 |
| 8pioneer | 227 | Gan, Steve (1584) | Lost 1-2 | -161482 |
| 9pioneer | 232 | Medeiros, Max (1658) | Won 2-0 | +211503 |
| top | average opponent: 1686record: 5-4 | new rating: 1503 | ||
| Grand Prix Providence 2016 (KLD standard) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 196 | Espina, Paul (1571) | Lost 1-2 | -171487 |
| 2standard | 307 | Nash, Corey (1480) | Won 2-0 | +181505 |
| 3standard | 384 | Gagnon, Louis (1594) | Lost 1-2 | -171488 |
| 4standard | 463 | Brenner, Jonathan (1483) | Lost 0-1 | -181470 |
| 5standard | 482 | Dias, Manuel (1509) | Lost 0-2 | -171453 |
| top | average opponent: 1528record: 1-4 | new rating: 1453 | ||
| Grand Prix New York 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 233 | Castillo, Carnegie (1500) | Won 2-0 | +181518 |
| 2standard | 353 | Phillips, Jeffrey (1432) | Won 2-1 | +161534 |
| 3standard | 310 | Rowe, Taylor (1575) | Lost 0-2 | -171517 |
| 4standard | 585 | Sweikert, Maxwell (1520) | Lost 0-2 | -181499 |
| 5standard | 534 | Morison, Kyle (1637) | Lost 0-2 | -151484 |
| 6standard | 742 | McKinney, Adam (1455) | Won 2-1 | +171501 |
| 7standard | 596 | Fallin, Rebecca (1508) | Won 2-1 | +181519 |
| 8standard | 518 | Perlee, Travis (1644) | Lost 1-2 | -151504 |
| top | average opponent: 1534record: 4-4 | new rating: 1504 | ||