Pfeifer, Richard
Current rating: 1616
| Grand Prix Phoenix 2018 (modern) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 88 | Gerhardt, Maxwell (1500) | Won 2-0 | +181526 |
| 2modern | 86 | Wright, Jared (1593) | Lost 0-2 | -171509 |
| 3modern | 362 | Slutsky, Simon (1635) | Lost 0-2 | -151494 |
| 4modern | 486 | Richards, Adam (1448) | Won 2-1 | +171511 |
| 5modern | 507 | Manabat, Philip (1472) | Won 2-1 | +171528 |
| 6modern | 347 | Marcia, Joseph (1489) | Won 2-1 | +171545 |
| 7modern | 187 | Sze, Kevin (1473) | Won 2-0 | +171562 |
| 8modern | 132 | Mittendorf, Jon (1663) | Won 2-0 | +201582 |
| 9modern | 97 | Macurda, Art (1657) | Won 2-0 | +191601 |
| 10modern | 38 | Li, Larry (2002) | Lost 1-2 | -111590 |
| 11modern | 62 | Diedrich, Aaron (1584) | Won 2-0 | +181608 |
| 12modern | 65 | Wolloch, Sam (1667) | Lost 0-2 | -171591 |
| 13modern | 79 | Whitman, Tyler (1580) | Won 2-1 | +181609 |
| 14modern | 45 | Gaieski, Ethan (1745) | Won 2-1 | +201629 |
| 15modern | 51 | Tamblyn, Mitchell (1901) | Lost 1-2 | -131616 |
| top | average opponent: 1627record: 10-5 | new rating: 1616 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 232 | Wu, David (1532) | Draw 1-1 | +11503 |
| 2sealed | 533 | Lee, Michael (1686) | Won 2-0 | +211524 |
| 3sealed | 574 | Altina, Federico (1472) | Lost 1-2 | -191505 |
| 4sealed | 768 | Yin, Matthew (1498) | Won 2-0 | +181523 |
| 5sealed | 541 | Craft, Christian (1518) | Draw 1-1 | 01523 |
| 6sealed | 698 | Tetlow, Adam (1684) | Lost 1-2 | -151508 |
| 7sealed | 694 | Wilhelm, Thomas (1546) | Won 2-1 | +191527 |
| 8sealed | 544 | Choe, Stephan (1516) | Lost 0-2 | -191508 |
| top | average opponent: 1556record: 3-3-2 | new rating: 1508 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 101 | Deditius, Daniel (1500) | Lost 0-2 | -181482 |
| 2sealed | 706 | [anonymous] | Lost 1-2 | -191463 |
| 3sealed | 880 | Wells, Michael (1473) | Won 2-0 | +191482 |
| 4sealed | 737 | Kendall, John (1517) | Won 2-0 | +181500 |
| 5sealed | 651 | David, Noah (1454) | Won 2-1 | +171517 |
| 6sealed | 341 | Shen, John (1522) | Won 2-1 | +181535 |
| 7sealed | 201 | Lam, Bryan (1537) | Lost 1-2 | -181517 |
| 8sealed | 393 | Smith, Duncan (1539) | Draw 1-1 | +11518 |
| 9sealed | 370 | Slutsky, Simon (1653) | Lost 0-2 | -161502 |
| top | average opponent: 1516record: 4-4-1 | new rating: 1502 | ||