Marrero, Michael
Current rating: 1506
Record: 7-7
| Grand Prix Oklahoma City 2015 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 436 | Hulsey, Jessica (1470) | Lost 0-2 | -181464 |
| 2modern | 343 | Nichols, Jack (1482) | Won 2-0 | +181482 |
| 3modern | 411 | Kemper, Jayson (1482) | Lost 0-0 | -181464 |
| 4modern | 519 | Chesney, Gregory (1486) | Won 2-0 | +191483 |
| 5modern | 462 | Jansen, Adam (1715) | Lost 0-2 | -141469 |
| 6modern | 1052 | Rogers, Dillon (1360) | Won 2-1 | +161485 |
| 7modern | 304 | Denner, Matthew (1575) | Lost 0-2 | -161469 |
| 8modern | 1037 | Girard, Gary (1454) | Won 2-1 | +171486 |
| 9modern | 209 | McCord, Kristopher (1590) | Won 2-1 | +201506 |
| average opponent: 1513record: 5-4 | new rating: 1506 | |||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 376 | Burns, Donald (1500) | Won 2-0 | +181518 |
| 2modern | 368 | Green, Trent (1453) | Lost 0-2 | -191499 |
| 3modern | 439 | Broderick, Michael (1512) | Lost 1-2 | -181481 |
| 4modern | 555 | Hunt, Stuart (1547) | Won 2-0 | +191500 |
| 5modern | 535 | Lutzow, Jack (1499) | Lost 1-2 | -181482 |
| average opponent: 1502record: 2-3 | new rating: 1482 | |||