Martin, Zach
Current rating: 1299
Record: 5-19-2
| Grand Prix Denver 2017 (HOU standard) | starting rating: 1319 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 275 | Branham, Raymond (1497) | Won 2-1 | +211340 |
| 2standard | 45 | Adams, Will (1466) | Lost 1-2 | -151325 |
| 3standard | 390 | Jones, Alek (1588) | Lost 0-2 | -141311 |
| 4standard | 415 | Frank, Kenneth (1552) | Lost 1-2 | -131298 |
| 5standard | 468 | Tom, Samuel (1459) | Won 2-1 | +211319 |
| 6standard | 355 | Whatley, Shane (1483) | Lost 0-2 | -161303 |
| 7standard | 417 | Davis, Chris (1605) | Won 2-1 | +241327 |
| 8standard | 327 | Arcuni, Philip (1661) | Lost 1-2 | -121315 |
| 9standard | 304 | Baltierra, Mark (1467) | Lost 0-2 | -161299 |
| top | average opponent: 1531record: 3-6 | new rating: 1299 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 36 | Fritz, Timothy (1500) | Won 2-1 | +201434 |
| 2standard | 141 | Cotter, Andrew (1662) | Lost 0-2 | -141420 |
| 3standard | 546 | Petersen, Ben (1558) | Lost 0-2 | -151405 |
| 4standard | 545 | Flint, Cody (1482) | Lost 0-2 | -171388 |
| 5standard | 688 | Drucker, Travis (1406) | Lost 0-0 | -181370 |
| 6standard | 644 | Frich, David (1447) | Lost 1-2 | -161354 |
| 7standard | 573 | Waelens, Craig (1337) | Lost 0-2 | -191335 |
| 8standard | 491 | Beck, Joanne (1427) | Lost 0-2 | -161319 |
| top | average opponent: 1477record: 1-7 | new rating: 1319 | ||
| Grand Prix Kansas City 2013 (modern) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 130 | Bond, Stephen (1545) | Draw 1-1 | +21445 |
| 2modern | 231 | Waller, Ryan (1501) | Lost 1-2 | -171428 |
| 3modern | 352 | Flores, Homero (1488) | Lost 0-2 | -171411 |
| 4modern | 430 | Reeser, Jonathan (1464) | Lost 0-2 | -171394 |
| 5modern | 408 | Prabhakar, Karthik (1458) | Won 2-0 | +201414 |
| 6modern | 340 | Dalziel, Taylor (1463) | Draw 1-1 | 01414 |
| top | average opponent: 1487record: 1-3-2 | new rating: 1414 | ||
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 100 | Sockwell, Micah (1480) | Lost 1-2 | -181482 |
| 2sealed | 279 | Huston, Nathaniel (1482) | Lost 0-2 | -181464 |
| 3sealed | 331 | Schneider, John (1345) | Lost 1-2 | -211443 |
| top | average opponent: 1436record: 0-3 | new rating: 1443 | ||