Mahini, Shaw
Current rating: 1560
Record: 19-17
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 98 | Chandler, Ryan (1487) | Lost 1-2 | -181428 |
| 2sealed | 600 | Senzel, Noah (1481) | Won 2-0 | +191447 |
| 3sealed | 446 | Minick, Mark (1500) | Won 2-1 | +191466 |
| 4sealed | 523 | Garcia, Mark (1605) | Won 2-1 | +211487 |
| 5sealed | 12 | Orr, Jim (1695) | Lost 0-2 | -141473 |
| 6sealed | 277 | Lamoureux, Alan (1520) | Won 2-0 | +181491 |
| 7sealed | 202 | Butler, Gavin (1488) | Won 2-1 | +181509 |
| 8sealed | 235 | Hunt, Justin (1668) | Won 2-1 | +211530 |
| 9sealed | 106 | Brown, Alex (1626) | Won 2-1 | +201550 |
| 10sealed | 38 | Castro Mahoney, Roberto (1558) | Lost 1-2 | -181532 |
| 11draft | 60 | Rosen, Drew (1551) | Won 2-1 | +181550 |
| 12draft | 57 | Dipsar, Sureyya (1790) | Won 2-0 | +231573 |
| 13draft | 65 | Dahan, Evan (1604) | Won 2-1 | +181591 |
| 14draft | 18 | Heitker, Gabe M (1615) | Lost 0-2 | -171574 |
| 15draft | 12 | Noworaj, Andrew (1796) | Lost 1-2 | -141560 |
| top | average opponent: 1599record: 10-5 | new rating: 1560 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 712 | Swick, Scott (1518) | Lost 1-2 | -181465 |
| 3standard | 862 | Brenizer, Craig D (1381) | Lost 1-2 | -191446 |
| top | average opponent: 1450record: 0-2 | new rating: 1446 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 496 | Bobic, Charles (1520) | Lost 1-2 | -181500 |
| 3sealed | 634 | Elkon, Jacob (1521) | Lost 0-2 | -171483 |
| 4sealed | 688 | Defilippo, David (1482) | Won 2-1 | +181501 |
| 5sealed | 587 | Pace, Joe (1498) | Lost 1-2 | -181483 |
| top | average opponent: 1505record: 1-3 | new rating: 1483 | ||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2 | Carolan, Chris (1406) | Lost 1-2 | -211537 |
| 2sealed | 184 | Magnan, Bronson (1482) | Lost 0-2 | -191518 |
| top | average opponent: 1444record: 0-2 | new rating: 1518 | ||
| Grand Prix Memphis 1999 (Urza's block) | starting rating: 1546 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 38 | Foster, James (1500) | Won 0-0 | +171563 |
| 2block | 63 | Kilpatrick, Robert (1500) | Won 0-0 | +171580 |
| 3block | 42 | Weber, Nick (1518) | Won 0-0 | +171597 |
| 4block | 25 | Pustilnik, Michael (1577) | Lost 0-0 | -191578 |
| 5block | 55 | Liston, Beth (1535) | Won 0-0 | +171595 |
| 6block | 38 | Parker, Victor (1554) | Lost 0-0 | -181577 |
| 7block | 59 | Woosley, Craig (1534) | Lost 0-0 | -191558 |
| top | average opponent: 1531record: 4-3 | new rating: 1558 | ||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 63 | Johnson, James (1500) | Won 0-0 | +181518 |
| 2sealed | 57 | Egli, Walter (1500) | Won 0-0 | +181536 |
| 3sealed | 70 | Spear, Azrael (1500) | Won 0-0 | +171553 |
| 4sealed | 29 | Buehler, Randy (1849) | Won 0-0 | +231576 |
| 5sealed | 22 | Finkel, Jon (1913) | Lost 0-0 | -121564 |
| 6sealed | 36 | Cayanan, Chris (1537) | Lost 0-0 | -181546 |
| top | average opponent: 1633record: 4-2 | new rating: 1546 | ||