Clark, Ken
Current rating: 1544
| Grand Prix Vancouver 2016 (OGW limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 235 | Wikene, Joshua (1500) | Draw 1-1 | -11527 |
| 2sealed | 468 | Friesen, Yascha (1500) | Won 2-1 | +181545 |
| 3sealed | 352 | Erickson, Kyle (1642) | Draw 0-0 | +11546 |
| 4sealed | 531 | Nagy, Franz (1518) | Won 2-1 | +181564 |
| 5sealed | 347 | Jeffery, Jon (1605) | Lost 1-2 | -171547 |
| 6sealed | 475 | Norrie, Eric (1516) | Won 2-0 | +171564 |
| 7sealed | 344 | Tremblay, Simon (1559) | Lost 1-2 | -181546 |
| 8sealed | 425 | Yu, Clark (1553) | Won 2-0 | +181564 |
| 9sealed | 325 | Altman, Gregory (1459) | Lost 0-2 | -201544 |
| top | average opponent: 1539record: 4-3-2 | new rating: 1544 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 288 | Dolbeer, Jed (1664) | Won 2-1 | +211529 |
| 3sealed | 159 | Chan, Robbie (1555) | Won 2-0 | +181547 |
| 4sealed | 11 | Withrow, Jesse G (1537) | Lost 0-2 | -181529 |
| 5sealed | 232 | Silence, Walter (1517) | Draw 1-1 | 01529 |
| 6sealed | 176 | Byrum, JR (1541) | Lost 1-2 | -181511 |
| 7sealed | 255 | Hu, Jonathan (1467) | Lost 0-2 | -191492 |
| 8sealed | 232 | Jefferson, Adam (1498) | Won 2-0 | +181510 |
| 9sealed | 175 | Vlahovich, Heather J (1470) | Won 2-0 | +181528 |
| top | average opponent: 1531record: 4-3-1 | new rating: 1528 | ||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 462 | Derksen, Caleb (1544) | Won 2-1 | +191519 |
| 2sealed | 106 | Colpron, Nick K (1500) | Won 2-0 | +171536 |
| 3sealed | 184 | Elliott, James (1536) | Lost 0-2 | -181518 |
| 4sealed | 238 | McGrew, Brian (1535) | Won 2-0 | +191537 |
| 5sealed | 227 | KURZER, MICAH (1537) | Won 2-0 | +181555 |
| 6sealed | 162 | Turtenwald, Owen (1848) | Lost 0-2 | -131542 |
| 7sealed | 211 | Sperling, Alexander (1599) | Won 2-1 | +191561 |
| 8sealed | 167 | Johnson-Epstein, Jasper (1628) | Won 2-0 | +191580 |
| 9sealed | 60 | Vonderahe, Lawrence Th (1570) | Won 2-0 | +181598 |
| 10sealed | 57 | Beare, Tom (1629) | Draw 1-1 | +11599 |
| 11draft | 10 | Beare, Tom (1629) | Lost 1-2 | -181581 |
| 12draft | 21 | Johnson, Kellan C (1598) | Lost 1-2 | -181563 |
| 13draft | 70 | Veen, Andrew (1470) | Lost 1-2 | -191544 |
| 14draft | 55 | Young, Nick w (1585) | Lost 1-2 | -171527 |
| 15draft | 61 | Gibson, Jamal (1537) | Draw 1-1 | 01527 |
| 16draft | 59 | D'Albora, Paul (1489) | Lost 0-2 | -191508 |
| top | average opponent: 1577record: 7-7-2 | new rating: 1508 | ||