| Li, Ruifeng2446 | ½-½ | Stewart, William John2297 | Millionaire Chess Op 2015 | 2015 |
| Stewart, William John2297 | 0-1 | Najer, E2658 | Millionaire Chess Op 2015 | 2015 |
| Stewart, William John2281 | 0-1 | Garcia Palermo, C2460 | 44th Marcel Duchamp | 2013 |
| Tristan, L2457 | 1-0 | Stewart, William John2281 | 44th Marcel Duchamp | 2013 |
| Stewart, William John2281 | ½-½ | Hernandez Guerrero, G2527 | 44th Marcel Duchamp | 2013 |
| Labollita, M2385 | 0-1 | Stewart, William John2281 | 44th Marcel Duchamp | 2013 |
| Stewart, William John2281 | 1-0 | Zarlenga, Marcelo | 44th Marcel Duchamp | 2013 |
| Modotti, Luis | 0-1 | Stewart, William John2281 | 44th Marcel Duchamp | 2013 |
| Stewart, William John2281 | 1-0 | Davis, Ernesto1837 | 44th Marcel Duchamp | 2013 |
| Maggiolo, E2054 | 0-1 | Stewart, William John2253 | ITT La Razon 2012 | 2012 |
| Stewart, William John2253 | 1-0 | Fusco, L2379 | ITT La Razon 2012 | 2012 |
| Feliciano, V2268 | 1-0 | Stewart, William John2253 | ITT La Razon 2012 | 2012 |
| Stewart, William John2253 | ½-½ | Estrada Nieto, J2310 | ITT La Razon 2012 | 2012 |
| Stewart, William John2253 | ½-½ | Lujan, C2379 | ITT La Razon 2012 | 2012 |
| Stewart, William John2253 | 1-0 | Maggiolo, E2054 | ITT La Razon 2012 | 2012 |