Guizzetti, Michael
Current rating: 1432
Record: 1-5-1
| Grand Prix Phoenix 2020 (pioneer) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 90 | King, Travis (1383) | Lost 0-2 | -201446 |
| 2pioneer | 234 | Gomez, Ben (1544) | Won 2-1 | +201466 |
| 3pioneer | 254 | Hennessey, Jeremy (1394) | Lost 1-2 | -191447 |
| 4pioneer | 375 | Burgess, Dayton (1628) | Lost 0-2 | -151432 |
| average opponent: 1487record: 1-3 | new rating: 1432 | |||
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 81 | Lewis, Alexander (1570) | Lost 1-2 | -171483 |
| 2modern | 432 | Gayagas, Bryce (1481) | Lost 0-2 | -181465 |
| 3modern | 836 | Raxter, Timothy (1490) | Draw 1-1 | +11466 |
| average opponent: 1514record: 0-2-1 | new rating: 1466 | |||