Rosen, Mark
Current rating: 1772 (#3020)
Record: 29-13
| Grand Prix Phoenix 2020 (pioneer) | starting rating: 1798 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 178 | Butler, Torin (1591) | Lost 1-2 | -221776 |
| 4pioneer | 227 | Carlson, Ryan (1491) | Won 2-0 | +131789 |
| 5pioneer | 206 | Nez, Shawn (1509) | Won 2-0 | +131802 |
| 6pioneer | 125 | Schlesinger, Bradley (1588) | Won 2-0 | +141816 |
| 7pioneer | 23 | Conrad, Dan (1661) | Lost 0-2 | -201796 |
| 8pioneer | 100 | Tone, Kevin (1505) | Lost 0-2 | -241772 |
| top | average opponent: 1558record: 3-3 | new rating: 1772 | ||
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1780 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 186 | Naylor, Andrew (1733) | Lost 1-2 | -191761 |
| 2sealed | 264 | Tarantini, Anthony (1479) | Won 2-1 | +131774 |
| 3sealed | 227 | Collins, Andrew (1481) | Won 2-0 | +131787 |
| 4sealed | 209 | Strasbourg, Brent (1528) | Won 2-0 | +131800 |
| 5sealed | 105 | Flinn, Ian (1570) | Lost 0-2 | -221778 |
| 6sealed | 151 | Havlovic, Bob (1770) | Won 2-1 | +181796 |
| 7sealed | 119 | Nolen, Lauren (2008) | Won 2-1 | +221818 |
| 8sealed | 77 | Willoughby, Tom (1724) | Lost 1-2 | -201798 |
| top | average opponent: 1662record: 5-3 | new rating: 1798 | ||
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1665 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 20 | Smock, Devin (1525) | Lost 0-2 | -211644 |
| 2sealed | 408 | Alexander, Andrew (1481) | Won 2-0 | +151659 |
| 3sealed | 322 | Galves, Victor (1738) | Won 2-0 | +201679 |
| 4sealed | 232 | Nowicki, Eric (1572) | Won 2-0 | +161695 |
| 5sealed | 200 | Tyner, James (1545) | Won 2-0 | +151710 |
| 6sealed | 136 | Zhou, Zirui (1869) | Won 2-1 | +211731 |
| 7sealed | 54 | Eapen, Roshen (1789) | Lost 0-2 | -171714 |
| 8sealed | 134 | Naide, Kazutaka (1784) | Won 2-0 | +191733 |
| 9sealed | 82 | Yao, Zile (1811) | Lost 0-2 | -161717 |
| 10draft | 107 | Cline, Blaise (1571) | Won 2-1 | +151732 |
| 11draft | 89 | Smith, Madison (1680) | Won 2-0 | +171749 |
| 12draft | 50 | Fort, Brian (1649) | Won 2-1 | +161765 |
| 13draft | 89 | Geer, Brett (1739) | Won 2-1 | +181783 |
| 14draft | 13 | Mast, Anthony (1740) | Lost 0-2 | -191764 |
| 15draft | 69 | Shaw, Andrew (1644) | Won 2-0 | +161780 |
| top | average opponent: 1676record: 11-4 | new rating: 1780 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 141 | Moran, Nick (1797) | Won 2-1 | +231523 |
| 4standard | 110 | Macejka, Larry (1543) | Lost 0-2 | -171506 |
| 5standard | 171 | Heise, William (1504) | Won 2-1 | +181524 |
| 6standard | 131 | Walter, Christopher (1500) | Won 2-1 | +171541 |
| 7standard | 89 | Fields, Khyler (1623) | Won 2-1 | +201561 |
| 8standard | 45 | Manfield, Seth (2159) | Lost 0-2 | -91552 |
| 9standard | 134 | Sukenik, Jonathan (2045) | Won 2-1 | +271579 |
| 10standard | 588 | Ruston, Richard (1577) | Won 2-0 | +181597 |
| 11standard | 590 | Boyd, Dylan (1632) | Lost 0-2 | -181579 |
| 12standard | 580 | Vaid, Akhil (1700) | Won 2-1 | +211600 |
| 13standard | 579 | Collier, James (1850) | Won 2-1 | +221622 |
| 14standard | 586 | Bowman, Connor (1891) | Won 2-0 | +231645 |
| 15standard | 564 | Sadowsky, Joel (1747) | Won 2-0 | +201665 |
| top | average opponent: 1736record: 10-3 | new rating: 1665 | ||