Gayan, Zachary
Current rating: 1519
Record: 15-16
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 83 | Opalka, Jason (1680) | Won 2-0 | +211553 |
| 2sealed | 118 | Busch, Joshua (1483) | Won 2-1 | +161569 |
| 3sealed | 58 | Hartley, Brandon (1526) | Lost 0-2 | -181551 |
| 4sealed | 131 | Locklear, David (1469) | Lost 1-2 | -201531 |
| 5sealed | 235 | Zimmerman, Nathan (1859) | Lost 1-2 | -121519 |
| top | average opponent: 1603record: 2-3 | new rating: 1519 | ||
| Grand Prix Madison 2019 (WAR limited) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 160 | Kuecker, Steven (1547) | Lost 0-2 | -191572 |
| 2sealed | 292 | Huntington, Ryan (1448) | Lost 1-2 | -201552 |
| 3sealed | 434 | Robertson, Nylah (1464) | Lost 1-2 | -201532 |
| top | average opponent: 1486record: 0-3 | new rating: 1532 | ||
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 85 | Hall II, Mike (1500) | Won 2-0 | +191489 |
| 2standard | 152 | Kublank, Andrew (1517) | Won 2-1 | +181507 |
| 3standard | 80 | Lam, David (1642) | Won 2-1 | +211528 |
| 4standard | 80 | Klein, Jeremy (1739) | Lost 1-2 | -141514 |
| 5standard | 159 | Heggen, Joshua (1482) | Won 2-1 | +171531 |
| 6standard | 86 | Crocker, Colin (1521) | Lost 1-2 | -181513 |
| 7standard | 147 | Hefner, Jessy (1558) | Won 2-1 | +191532 |
| 8standard | 168 | Stalsberg, Chase (1855) | Won 2-0 | +231555 |
| 9standard | 88 | Michel, Gregory (1982) | Lost 1-2 | -101545 |
| 10standard | 88 | Wise, Steve (1773) | Lost 1-2 | -141531 |
| 11standard | 106 | Kaplan, Louis (1749) | Won 2-1 | +221553 |
| 12standard | 89 | Merrick, Greg (1540) | Lost 1-2 | -191534 |
| 13standard | 108 | Williams, Caleb (1603) | Won 2-0 | +201554 |
| 14standard | 84 | Balster, George (1566) | Won 2-0 | +181572 |
| 15standard | 79 | Dahlstrom, Brandin (1612) | Won 2-1 | +191591 |
| top | average opponent: 1643record: 10-5 | new rating: 1591 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 30 | Adams, Evan (1740) | Lost 0-2 | -141486 |
| 2standard | 511 | Oaks, Austin (1524) | Lost 1-2 | -171469 |
| 3standard | 846 | Repa, David (1445) | Won 2-1 | +181487 |
| 4standard | 765 | Hudson, Andrew (1689) | Won 2-1 | +211508 |
| 5standard | 561 | Fondren, Roger (1473) | Won 2-1 | +181526 |
| 6standard | 494 | Bond, Robert (1461) | Lost 0-2 | -201506 |
| 7standard | 603 | Gutierrez, Jonathan (1503) | Lost 0-2 | -181488 |
| 8standard | 541 | Bechtel, Ray (1486) | Lost 0-2 | -181470 |
| top | average opponent: 1540record: 3-5 | new rating: 1470 | ||