Martin, Charles
Current rating: 1509
Record: 35-34-1 (GP) / 2-6 (professional)
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 392 | Moore, Gaben (1500) | Lost 0-2 | -191509 |
| top | record: 0-1 | new rating: 1509 | ||
| Pro Tour Amonkhet (AKH standard) | starting rating: 1579 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 177 | Ramboa, Thierry (1909) | Lost 0-2 | -131566 |
| 2draft | 23 | Wolbers, Andrew (1779) | Lost 0-2 | -141552 |
| 3draft | 101 | Stevenson, Quint (1616) | Won 2-0 | +191571 |
| 4standard | 112 | Petre, Evan (1926) | Lost 1-2 | -111560 |
| 5standard | 151 | Jacobson, Mark (1941) | Lost 0-2 | -121548 |
| 6standard | 181 | Picciafuochi, Riccardo (1561) | Won 2-1 | +181566 |
| 7standard | 132 | Suenaga, Hirohisa (1395) | Lost 1-2 | -211545 |
| 8standard | 150 | Adrian, Nathan (1580) | Lost 1-2 | -171528 |
| top | average opponent: 1713record: 2-6 | new rating: 1528 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 404 | Marquez, Chris (1463) | Draw 1-1 | -11535 |
| 2sealed | 338 | McGraw, Bryan (1641) | Won 2-0 | +201555 |
| 3sealed | 386 | Peake, Joey (1518) | Won 2-1 | +171572 |
| 4sealed | 220 | Jones, Kevin (1859) | Won 2-1 | +231595 |
| 5sealed | 108 | Kavi, Ankit (1556) | Won 2-0 | +171612 |
| 6sealed | 54 | Newton, Tanner (1576) | Lost 1-2 | -181594 |
| 7sealed | 146 | Lossett, Joe (1840) | Won 2-0 | +221616 |
| 8sealed | 89 | Foley, Thomas (1438) | Lost 0-2 | -211595 |
| 9sealed | 175 | Murphy, Steven (1687) | Lost 0-2 | -161579 |
| top | average opponent: 1620record: 5-3-1 | new rating: 1579 | ||
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 137 | Emrich, HiLevi (1518) | Lost 1-2 | -191561 |
| 3sealed | 326 | Gauker, Dylan (1672) | Won 2-1 | +201581 |
| 4sealed | 294 | Meyer, Ivan (1517) | Lost 0-2 | -191562 |
| 5sealed | 399 | Roe, Kyle (1496) | Won 2-1 | +171579 |
| 6sealed | 212 | Jardine, Kevin (1426) | Won 2-1 | +151594 |
| 7sealed | 202 | Schroeder, Josh (1465) | Lost 0-2 | -201574 |
| 8sealed | 251 | Denner, Matthew (1604) | Lost 0-2 | -181556 |
| 9sealed | 269 | Kearney, Dale (1444) | Lost 1-2 | -201536 |
| top | average opponent: 1518record: 3-5 | new rating: 1536 | ||
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1630 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 184 | Hall, Jason (1347) | Lost 1-2 | -231607 |
| 3modern | 608 | Cocchiarella, Sam (1749) | Lost 1-2 | -151592 |
| 4modern | 834 | Crawford, Joshua (1418) | Won 2-0 | +151607 |
| 5modern | 464 | Wong, Thomas (1512) | Won 2-0 | +161623 |
| 6modern | 349 | Riley, Bradley (1517) | Lost 1-2 | -201603 |
| 7modern | 565 | Bao, Kun (1564) | Won 2-0 | +171620 |
| 8modern | 433 | Funkhouser, Andrew (1482) | Lost 0-2 | -201600 |
| 9modern | 492 | Blue, Nate (1509) | Lost 1-2 | -201580 |
| top | average opponent: 1512record: 3-5 | new rating: 1580 | ||
| Grand Prix Detroit 2016 (modern) | starting rating: 1691 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 281 | White, Logan (1504) | Lost 1-2 | -211670 |
| 3modern | 607 | Pentico, Trevor (1567) | Lost 1-2 | -201650 |
| 4modern | 888 | Ngo, Danny (1554) | Lost 1-2 | -201630 |
| top | average opponent: 1541record: 0-3 | new rating: 1630 | ||
| Grand Prix Indianapolis 2015 (BFZ standard) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 80 | Stahl, Simon (1578) | Lost 1-2 | -171515 |
| 4standard | 275 | Shaw, John (1764) | Won 2-0 | +221537 |
| 5standard | 212 | Carlson, Lukas (1669) | Won 2-0 | +211558 |
| 6standard | 73 | Miller, Anthony (1405) | Won 2-1 | +151573 |
| 7standard | 68 | Miller, Les (1616) | Won 2-0 | +191592 |
| 8standard | 11 | Emerick, James (1662) | Won 2-1 | +191611 |
| 9standard | 12 | Clawson, Brent (1740) | Won 0-0 | +201631 |
| 10standard | 5 | Kirkwood, Scott (1848) | Lost 1-2 | -141617 |
| 11standard | 28 | Friedman, Ben (1918) | Won 2-1 | +231640 |
| 12standard | 12 | Cuneo, Andrew (2020) | Lost 1-2 | -111629 |
| 13standard | 19 | Mulcahy, Luke (1991) | Won 2-1 | +241653 |
| 14standard | 26 | Wager, James (1703) | Won 2-0 | +191672 |
| 15standard | 9 | Tomsovic, Tommy (1732) | Won 2-0 | +191691 |
| top | average opponent: 1742record: 10-3 | new rating: 1691 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 291 | Stensvold, Ryan (1448) | Won 2-0 | +161568 |
| 2sealed | 62 | Holmen, Jason (1518) | Won 2-0 | +181586 |
| 3sealed | 151 | Galli, John (1502) | Lost 0-2 | -201566 |
| 4sealed | 436 | Domocmat, Jeremy (1677) | Lost 0-2 | -161550 |
| 5sealed | 473 | Check, Matthew (1519) | Lost 1-2 | -191531 |
| 6sealed | 480 | Nelson, John (1350) | Won 2-1 | +151546 |
| 7sealed | 339 | Tierney, Rob (1500) | Won 2-1 | +171563 |
| 8sealed | 250 | Krasnitski, Mike (1863) | Lost 0-2 | -121551 |
| 9sealed | 216 | Bush, Jeremy (1505) | Lost 0-2 | -191532 |
| top | average opponent: 1542record: 4-5 | new rating: 1532 | ||
| Grand Prix Cleveland 2015 (FRF limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 311 | Manner, Joey (1740) | Lost 1-2 | -131487 |
| 4sealed | 416 | Tenjum, Andrew (1743) | Won 2-0 | +221509 |
| 5sealed | 343 | Phraner, Ryan (1788) | Won 2-1 | +231532 |
| 6sealed | 173 | Nyhart, Ken (1516) | Won 2-1 | +181550 |
| 7sealed | 31 | Reiber, Zachary (1645) | Won 2-1 | +201570 |
| 8sealed | 59 | Soorani, Shaheen (2038) | Lost 1-2 | -101560 |
| 9sealed | 57 | Morisette, Brad (1570) | Won 2-0 | +181578 |
| 10draft | 90 | Douglass, Tyler (1623) | Won 2-0 | +191597 |
| 11draft | 39 | White, Justin (1718) | Won 2-0 | +201617 |
| 12draft | 19 | Brown, Andrew F (1626) | Lost 0-2 | -181599 |
| 13draft | 54 | Moran, Nick (1762) | Lost 1-2 | -151584 |
| 14draft | 53 | McNamara, Brendan (1631) | Lost 1-2 | -171567 |
| 15draft | 29 | Mangner, Sean (1768) | Lost 1-2 | -151552 |
| top | average opponent: 1705record: 7-6 | new rating: 1552 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 57 | Alvarez, Joshua (1376) | Won 2-1 | +161516 |
| 2modern | 72 | Wilson, Orion (1678) | Lost 0-2 | -151501 |
| 3modern | 252 | Kephart, Scott (1482) | Won 2-1 | +171518 |
| 4modern | 257 | Morrison, Bruce (1520) | Won 2-1 | +181536 |
| 5modern | 81 | Moeller, Zachary (1492) | Lost 0-2 | -181518 |
| 6modern | 269 | MacCallum, Scott (1559) | Lost 1-2 | -181500 |
| top | average opponent: 1518record: 3-3 | new rating: 1500 | ||