Gerken, Bill
Current rating: 1650
| Grand Prix Detroit 2016 (modern) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 716 | Lyons, Tre (1433) | Won 2-1 | +161565 |
| 2modern | 205 | Balle, Sam (1398) | Won 2-1 | +151580 |
| 3modern | 275 | McLaughlin, Morgan (1794) | Lost 1-2 | -141566 |
| 4modern | 688 | Owen, Derek (1499) | Won 2-0 | +171583 |
| 5modern | 276 | White, Drew (1490) | Won 2-1 | +161599 |
| 6modern | 173 | Belanger, Maxim (1813) | Won 2-1 | +221621 |
| 7modern | 171 | Allen, Garrett (1615) | Won 2-0 | +181639 |
| 8modern | 51 | Petrilli, Trevor (1666) | Lost 0-2 | -181621 |
| 9modern | 204 | Flanigan, Chris (1631) | Won 2-1 | +181639 |
| 10modern | 67 | McLeskey, Kevin (1573) | Won 2-1 | +171656 |
| 11modern | 89 | Ganz, Andreas (1829) | Lost 0-2 | -151641 |
| 12modern | 147 | Lax, Ari (1959) | Lost 1-2 | -121629 |
| 13modern | 143 | Singleton, Chris (1497) | Won 2-1 | +161645 |
| 14modern | 117 | Hartman, Colin (1603) | Lost 1-2 | -191626 |
| 15modern | 137 | Nass, Matthew (1982) | Won 2-1 | +241650 |
| top | average opponent: 1652record: 10-5 | new rating: 1650 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 737 | Hui, Brian (1641) | Won 2-0 | +211485 |
| 2modern | 75 | Bundens, Justin (1695) | Draw 1-1 | +41489 |
| 3modern | 531 | Wamboldt, Kyle (1517) | Won 2-1 | +181507 |
| 4modern | 290 | Holtman, Jacob (1535) | Lost 1-2 | -171490 |
| 5modern | 564 | Heinz Jr, Michael (1516) | Won 2-1 | +181508 |
| 6modern | 341 | Castejon, Henry (1537) | Won 2-0 | +191527 |
| 7modern | 200 | Bennett, Jason (1658) | Lost 1-2 | -161511 |
| 8modern | 372 | Marion, Pascal (1700) | Won 2-0 | +211532 |
| 9modern | 247 | Mincucci, Nick (1464) | Won 2-1 | +171549 |
| top | average opponent: 1585record: 6-2-1 | new rating: 1549 | ||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1070 | Burgess, Tory (1500) | Lost 0-2 | -181482 |
| 2modern | 1081 | Montefusco, Anthony (1480) | Lost 0-2 | -181464 |
| 3modern | 1232 | Dupsha, Christopher (1423) | Won 2-1 | +171481 |
| 4modern | 1207 | Morochove, Steve (1506) | Lost 0-2 | -171464 |
| top | average opponent: 1477record: 1-3 | new rating: 1464 | ||