Marcelo, Rowen
Current rating: 1429
Record: 4-8
| Grand Prix Calgary 2019 (modern) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 278 | Lukacs, Michael (1500) | Lost 1-2 | -171446 |
| 2modern | 255 | Swanson, Matthew (1394) | Lost 1-2 | -191427 |
| 3modern | 392 | Sipley, Richard (1431) | Lost 0-2 | -181409 |
| 4modern | 424 | Farquharson, Travis (1446) | Lost 0-2 | -181391 |
| 5modern | 382 | Ivany, Bradley (1428) | Won 2-0 | +191410 |
| 6modern | 312 | Lysy-Wilson, Duncan (1448) | Won 2-0 | +191429 |
| average opponent: 1441record: 2-4 | new rating: 1429 | |||
| Grand Prix Singapore 2011 (NPH standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 54 | Tang, Stephen Roy (1453) | Lost 1-2 | -191481 |
| 2standard | 177 | Singh, Devsharan (1484) | Lost 1-2 | -181463 |
| 3standard | 203 | Neo, Donald Toh Kiat (1465) | Won 2-1 | +181481 |
| 4standard | 271 | Macasaet, Brian (1485) | Lost 0-2 | -181463 |
| 5standard | 269 | Luo, Xiao Fei (1445) | Won 2-0 | +181481 |
| 6standard | 234 | Thneah, Chang Keat (1479) | Lost 0-2 | -181463 |
| average opponent: 1469record: 2-4 | new rating: 1463 | |||