Bederka, Alan
Current rating: 1531
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 769 | Scibetta, Vinny (1500) | Lost 0-2 | -181515 |
| 2standard | 977 | Stevens, Nick (1482) | Won 2-1 | +171532 |
| 3standard | 873 | Rudy, Ian (1500) | Won 2-1 | +171549 |
| 4standard | 843 | Bright, Payden C (1517) | Lost 0-2 | -181531 |
| top | average opponent: 1500record: 2-2 | new rating: 1531 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 178 | Stojak, Peter (1482) | Won 2-0 | +181499 |
| 2sealed | 21 | Leidner, Ronald (1563) | Won 2-0 | +191518 |
| 3sealed | 75 | Huffnagle, Nathan (1530) | Won 2-0 | +181536 |
| 4sealed | 4 | Palermo, Julian J (1539) | Lost 1-2 | -181518 |
| 5sealed | 68 | Teitel, Trevor (1507) | Won 2-1 | +181536 |
| 6sealed | 97 | Chapin, Patrick (1825) | Lost 1-2 | -131523 |
| 7sealed | 126 | Kolowith, Tommy (1788) | Won 2-0 | +231546 |
| 8sealed | 64 | Glavin, Lucas (1842) | Lost 1-2 | -131533 |
| top | average opponent: 1635record: 5-3 | new rating: 1533 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 262 | Dostie, James (1500) | Lost 0-2 | -181482 |
| 2sealed | 250 | Sutton, Christopher (1419) | Lost 0-2 | -191463 |
| 3sealed | 384 | Rumbaugh, James (1464) | Won 2-1 | +181481 |
| top | average opponent: 1461record: 1-2 | new rating: 1481 | ||