Maron, Alf
Current rating: 1463
Record: 15-18-1
| Grand Prix Lyon 2012 (modern) | starting rating: 1436 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 630 | Guerreri, Luca (1500) | Won 2-0 | +191455 |
| 2modern | 550 | Valentini, Nicolo (1484) | Lost 1-2 | -171438 |
| 3modern | 627 | Maury, Florian (1501) | Lost 1-2 | -171421 |
| 4modern | 775 | Hart, Aaron (1403) | Won 2-0 | +181439 |
| 5modern | 740 | Lauwers, Jelle (1494) | Lost 1-2 | -171422 |
| 6modern | 730 | Weiss, Nicolas (1482) | Won 2-1 | +191441 |
| 7modern | 710 | Huss, Thibaut (1499) | Won 2-0 | +191460 |
| 8modern | 639 | Legros, Yoann (1598) | Lost 0-2 | -161444 |
| 9modern | 641 | George, Lucianaz (1498) | Won 2-1 | +191463 |
| top | average opponent: 1496record: 5-4 | new rating: 1463 | ||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 910 | Plommer, Raoul S (1500) | Lost 1-2 | -181492 |
| 2legacy | 908 | Audejean, Vincent (1441) | Lost 0-2 | -191473 |
| 3legacy | 969 | Broeren, Martijn (1465) | Draw 1-1 | 01473 |
| 4legacy | 1027 | Brinkmann, Jan (1493) | Won 2-1 | +181491 |
| 5legacy | 952 | Balmas, Gary (1482) | Lost 0-2 | -181473 |
| 6legacy | 959 | Bruegemann, Dirk (1465) | Lost 1-2 | -181455 |
| 7legacy | 916 | Rosenthal, Jorn (1446) | Won 2-0 | +181473 |
| 8legacy | 845 | Notzli, Matthias (1464) | Lost 1-2 | -181455 |
| 9legacy | 804 | Schouten, Bram (1426) | Lost 1-2 | -191436 |
| top | average opponent: 1465record: 2-6-1 | new rating: 1436 | ||
| Grand Prix Dortmund 2006 (GPT limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Rautenberg, Kathrin (1500) | Won 2-0 | +171537 |
| 2sealed | 48 | Winkelmann, Denis (1518) | Won 2-1 | +181555 |
| 3sealed | 51 | Platzer, Lubos (1719) | Lost 1-2 | -151540 |
| 4sealed | 120 | Bungard, Oliver (1590) | Lost 0-2 | -171523 |
| 5sealed | 136 | Lybaert, Marijn (1735) | Lost 0-2 | -141509 |
| 6sealed | 168 | Geraldo, Paulo (1517) | Won 2-1 | +181527 |
| 7sealed | 116 | Pech, Rene (1603) | Lost 0-2 | -171510 |
| top | average opponent: 1597record: 3-4 | new rating: 1510 | ||
| Grand Prix Leipzig 2005 (BOK limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 113 | Chairet, Krispin (1500) | Lost 0-1 | -181504 |
| 2sealed | 172 | Riffert, Till (1478) | Lost 0-2 | -191485 |
| 3sealed | 185 | Liebmann, Falk (1463) | Won 2-0 | +181503 |
| 4sealed | 142 | Schmeisser, Michael (1482) | Won 2-1 | +171520 |
| 5sealed | 99 | Rohm, Markus (1505) | Won 2-1 | +181538 |
| 6sealed | 70 | Schwarz, Stephan (1521) | Lost 0-2 | -181520 |
| top | average opponent: 1492record: 3-3 | new rating: 1520 | ||
| Grand Prix Vienna 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 61 | Vilm, Jerome (1603) | Won 2-1 | +201520 |
| 5sealed | 30 | Zniszczol, Jacek (1514) | Won 2-1 | +181538 |
| 6sealed | 8 | Minieri, Dario (1660) | Lost 1-2 | -161522 |
| top | average opponent: 1592record: 2-1 | new rating: 1522 | ||