Shapiro, Mark
Current rating: 1375
Record: 4-8-1 (GP) / 2-6 (professional)
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 54 | Harwood, Scott (1518) | Won 2-0 | +201458 |
| 3standard | 62 | Harkins, Jesse (1536) | Draw 1-1 | +11459 |
| 4standard | 111 | Lasley, Brett A (1506) | Lost 1-2 | -171442 |
| 5standard | 197 | Nguyen, Richard (1505) | Lost 0-2 | -171425 |
| 6standard | 270 | Kahlo, Chase P (1501) | Lost 0-2 | -171408 |
| 7standard | 227 | Linton, Robert (1480) | Lost 1-2 | -161392 |
| 8standard | 173 | Alatis, Eric (1488) | Lost 1-2 | -171375 |
| top | average opponent: 1505record: 1-5-1 | new rating: 1375 | ||
| Pro Tour San Diego 2010 (WWK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 110 | Bulnes, Armando (1529) | Lost 1-2 | -171483 |
| 2standard | 170 | Carro, Jorge (1502) | Lost 0-2 | -181465 |
| 3standard | 171 | Moreno, Daniel (1422) | Won 2-0 | +171482 |
| 4standard | 129 | Meyst, Rich (1634) | Lost 0-2 | -151467 |
| 5standard | 166 | Yokoi, Masaki (1617) | Lost 0-2 | -151452 |
| 6draft | 55 | Sakamoto, Sakito (1450) | Lost 0-2 | -181434 |
| 7draft | 172 | Cresswell, Desmond (1421) | Won 2-1 | +171451 |
| 8draft | 113 | Sirilertvorakul, Veerapat (1716) | Lost 1-2 | -131438 |
| top | average opponent: 1536record: 2-6 | new rating: 1438 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 456 | Sarmiento, James (1500) | Won 2-1 | +181518 |
| 2sealed | 410 | Berk, Bradley (1518) | Lost 0-2 | -181500 |
| 3sealed | 537 | Klein, Steven (1506) | Lost 1-2 | -181482 |
| 4sealed | 682 | Mobilio, Stephen T (1482) | Won 2-1 | +181500 |
| 5sealed | 570 | Williams, Albert (1500) | Won 2-0 | +181518 |
| 6sealed | 505 | Briscoe, Kenneth (1517) | Lost 0-2 | -181500 |
| top | average opponent: 1504record: 3-3 | new rating: 1500 | ||