Vrenna, Walter
Current rating: 1475
Record: 7-9
| Grand Prix Turin 2017 (HOU standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 23 | Iavarone, Francesco (1500) | Won 2-0 | +181508 |
| 2standard | 54 | Riva, Alessandro (1386) | Lost 0-2 | -201488 |
| 3standard | 388 | Bronzini, Matteo (1449) | Won 2-1 | +171505 |
| 4standard | 277 | Noordzij, Wouter (1702) | Won 2-0 | +221527 |
| 5standard | 163 | Peater, Wead (1510) | Lost 0-2 | -191508 |
| 6standard | 284 | Pidutti, Paolo (1609) | Lost 1-2 | -161492 |
| 7standard | 247 | Reale, Andrea (1492) | Won 2-0 | +181510 |
| 8standard | 266 | Lupini, Lorenzo (1547) | Lost 0-2 | -171493 |
| 9standard | 248 | Balzana, Nicola (1511) | Lost 0-2 | -181475 |
| average opponent: 1523record: 4-5 | new rating: 1475 | |||
| Grand Prix Rimini 2016 (EMN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 131 | Fava, Riccardo (1591) | Lost 0-2 | -161484 |
| 4standard | 225 | Boddy, Jordan (1513) | Lost 1-2 | -181466 |
| 5standard | 246 | Baldrati, Enrico (1500) | Won 2-0 | +191485 |
| 6standard | 213 | Morrone, Diego (1625) | Won 2-0 | +201505 |
| 7standard | 142 | Michieletti, Alex (1557) | Lost 0-2 | -171488 |
| 8standard | 211 | Basay, Emrehan Ege (1521) | Lost 0-2 | -171471 |
| 9standard | 234 | Sacchi, Luca (1531) | Won 2-0 | +191490 |
| average opponent: 1548record: 3-4 | new rating: 1490 | |||