Marcks, Ronald
Current rating: 1490
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 209 | Borodawka, Benjamin (1379) | Won 2-0 | +161506 |
| 2sealed | 99 | Huff, Gregory (1464) | Won 2-0 | +171523 |
| 3sealed | 141 | Bell, Michael (1623) | Lost 1-2 | -161507 |
| 4sealed | 96 | Mattie, David (1498) | Lost 0-2 | -181489 |
| 5sealed | 196 | Gallivan, Patrick (1505) | Won 2-0 | +181507 |
| 6sealed | 134 | Pierce, Stephen (1565) | Lost 0-2 | -171490 |
| top | average opponent: 1506record: 3-3 | new rating: 1490 | ||
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 299 | Heffernan, Anthony (1500) | Lost 0-2 | -191508 |
| 2sealed | 299 | Nguyen, Tony (1522) | Lost 0-2 | -171491 |
| 3sealed | 299 | Tolson, Bear (1464) | Won 2-0 | +171508 |
| 4sealed | 299 | Tam, Vincent (1480) | Lost 1-2 | -181490 |
| top | average opponent: 1491record: 1-3 | new rating: 1490 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 364 | Jiang, Lianjie (1565) | Draw 1-1 | +11501 |
| 2sealed | 321 | McGlynn, Shamus (1500) | Won 2-0 | +181519 |
| 3sealed | 186 | Lao, Jeddy (1500) | Lost 1-2 | -181501 |
| 4sealed | 116 | Diesch, Matthew (1593) | Lost 0-2 | -171484 |
| 5sealed | 401 | Valerio, Daniel (1482) | Won 2-1 | +181502 |
| 6sealed | 304 | Nelson, Aaron (1501) | Won 2-1 | +181520 |
| 7sealed | 227 | Alvarado Lopez, Jorge (1585) | Won 2-0 | +201540 |
| 8sealed | 159 | Coqueiro, Rafael S (1840) | Lost 1-2 | -131527 |
| top | average opponent: 1571record: 4-3-1 | new rating: 1527 | ||