event | round | table | player one | result | player two |
Grand Prix Warsaw 2016 | 8 | 6 | Kowalski, Grzegorz (2090) | Won 2-1 | Stark, Ben S (2057) |
Pro Tour Ixalan | 8 | 11 | Kowalski, Grzegorz (2056) | Lost 0-2 | Stark, Ben S (2060) |
2018 World Championship | 5 | 1 | Kowalski, Grzegorz (2113) | Won 2-0 | Stark, Ben S (1967) |
2018 World Championship | S | Kowalski, Grzegorz (2181) | Won 3-0 | Stark, Ben S (2038) |