Prellwitz, Joel
Current rating: 1506
| Grand Prix Milwaukee 2016 (KLD limited) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 146 | Thousand, Jacob (1500) | Won 2-0 | +181523 |
| 2sealed | 268 | Klemencic, Joseph (1687) | Won 2-0 | +211544 |
| 3sealed | 57 | Ayers, Brandon (2008) | Lost 0-2 | -101534 |
| 4sealed | 211 | Barber, Matthew (1572) | Won 2-1 | +181552 |
| 5sealed | 265 | Boris, Harry (1537) | Won 2-1 | +181570 |
| 6sealed | 67 | Wrensch, Chris (1624) | Won 2-0 | +191589 |
| 7sealed | 81 | Chen, Michael (1651) | Lost 0-2 | -171572 |
| 8sealed | 183 | Burkhart, Corey (2103) | Lost 0-2 | -91563 |
| 9sealed | 186 | Thor, Thown (1537) | Won 2-1 | +181581 |
| 10draft | 34 | Root, Joshua (1536) | Lost 1-2 | -191562 |
| 11draft | 34 | Kirkwood, Ryan (1529) | Lost 1-2 | -191543 |
| 12draft | 33 | Nelson, Jon (1560) | Lost 0-2 | -171526 |
| 13draft | 124 | Pigeon, Adam (1464) | Lost 0-2 | -201506 |
| top | average opponent: 1639record: 6-7 | new rating: 1506 | ||
| Grand Prix Quebec City 2015 (BFZ standard) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 138 | Hinton-Hatin, Tommy (1500) | Lost 1-2 | -191526 |
| 2standard | 230 | Feeley, Isabelle (1451) | Lost 0-2 | -201506 |
| 3standard | 351 | St-Onge, Philippe (1464) | Won 2-0 | +181524 |
| 4standard | 291 | Laliberte, Jonathan (1486) | Lost 0-2 | -191505 |
| top | average opponent: 1475record: 1-3 | new rating: 1505 | ||
| Grand Prix Madison 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 10 | Schaeffer, William (1500) | Won 2-1 | +181518 |
| 2sealed | 206 | Johnson, Rick (1501) | Won 2-0 | +181536 |
| 3sealed | 33 | Hill, Jon (1500) | Won 2-1 | +171553 |
| 4sealed | 8 | Frazier, Kurtis (1466) | Won 2-1 | +161569 |
| 5sealed | 27 | Markeson, Scott (1966) | Lost 0-2 | -111558 |
| 6sealed | 194 | Milutinovic, Charles (1669) | Won 2-1 | +201578 |
| 7sealed | 57 | Rogganbuck, Scott (1618) | Lost 0-2 | -171561 |
| 8sealed | 124 | McNamara, Brendan (1648) | Lost 0-2 | -161545 |
| top | average opponent: 1608record: 5-3 | new rating: 1545 | ||