Bosen, Arthur L
Current rating: 1503
Record: 9-9
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 847 | Stein, Joseph (1500) | Won 2-0 | +181538 |
| 4modern | 814 | Jones, Derrick (1641) | Lost 1-2 | -171521 |
| 5modern | 883 | Liu, Justin (1478) | Won 2-1 | +181539 |
| 6modern | 754 | Richardson, Robert (1530) | Lost 0-2 | -191520 |
| 7modern | 936 | Quinn, Stephen (1574) | Lost 0-2 | -171503 |
| top | average opponent: 1545record: 2-3 | new rating: 1503 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 104 | Cummings, Dennis K (1614) | Lost 1-2 | -161523 |
| 3sealed | 547 | Peter G., (1500) | Won 2-0 | +171540 |
| 4sealed | 516 | Jarmak, Ben (1521) | Won 2-0 | +181558 |
| 5sealed | 280 | Fasano, Joe (1474) | Lost 1-2 | -201538 |
| 6sealed | 298 | Daudelin, Andew (1517) | Lost 0-2 | -181520 |
| top | average opponent: 1525record: 2-3 | new rating: 1520 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 410 | MINK, ADAM B (1500) | Lost 0-2 | -181482 |
| 3standard | 472 | Flagg, Kevin (1482) | Won 2-0 | +181500 |
| 4standard | 411 | Truskoski, Timothy (1518) | Won 2-0 | +181518 |
| 5standard | 159 | Labutka, Adam (1527) | Won 2-1 | +191537 |
| 6standard | 113 | Reiser, Adam (1736) | Won 2-0 | +211558 |
| 7standard | 134 | Thompson, Matt (1625) | Lost 0-2 | -171541 |
| 8standard | 183 | Artese, Alex (1475) | Lost 1-2 | -191522 |
| 9standard | 215 | Lucas, Christopher (1473) | Won 2-0 | +171539 |
| top | average opponent: 1542record: 5-3 | new rating: 1539 | ||