Tang, Mark
Current rating: 1488
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 32 | Prange, Amanda (1500) | Won 2-1 | +181485 |
| 2sealed | 108 | Johnston, Joshua (1483) | Won 2-0 | +181503 |
| 3sealed | 153 | Woodward, Jonathan (1669) | Lost 0-2 | -151488 |
| top | average opponent: 1551record: 2-1 | new rating: 1488 | ||
| Grand Prix Oakland 2010 (extended) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 42 | McCormack, Conor (1500) | Lost 0-2 | -181485 |
| 2extended | 250 | Petitt, Narayana (1482) | Lost 0-2 | -181467 |
| top | average opponent: 1491record: 0-2 | new rating: 1467 | ||
| Grand Prix Los Angeles 2009 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 90 | Carter, Sean T (1559) | Won 2-1 | +191519 |
| 2extended | 143 | Williams, Sean (1501) | Lost 0-2 | -181501 |
| 3extended | 224 | Saleh, Keyafar (1585) | Won 2-1 | +191520 |
| 4extended | 138 | Edelson, Steve (1555) | Draw 1-1 | +11521 |
| 5extended | 195 | Mayer, Kenny (1555) | Lost 1-2 | -171504 |
| 6extended | 242 | Hennesse, Mathias (1517) | Won 2-0 | +181522 |
| 7extended | 179 | MacDonald, Dylan (1473) | Lost 0-2 | -191503 |
| top | average opponent: 1535record: 3-3-1 | new rating: 1503 | ||