| 9511 | Ucar - Ostrowski | 0-1 | (big_chess) | unrated |
| 9516 | Ostrowski - Podogov | 0-1 | (big_chess) | unrated |
| 9520 | Czekaj - Ostrowski | 1-0 | (big_chess) | unrated |
| 9523 | Ostrowski - Nagy | 0-1 | (big_chess) | unrated |
| 9525 | Urbina - Ostrowski | 1-0 | (big_chess) | unrated |
| 9527 | Ostrowski - de Vassal | 0-1 | (big_chess) | unrated |
| 9700 | Kuhne - Ostrowski | 1/2-1/2 | (chess) | rated |
| 9705 | Ostrowski - Helmer | 1/2-1/2 | (chess) | rated |
| 9709 | Yeke - Ostrowski | 0-1 | (chess) | rated |
| 9712 | Ostrowski - Aigner | 1/2-1/2 | (chess) | rated |
| 9714 | Louro - Ostrowski | 0-1 | (chess) | rated |
| 9716 | Ostrowski - Eizenhammer | 1-0 | (chess) | rated |
| 9951 | Perrotta - Ostrowski | 0-1 | (chess_960) | unrated |
| 9956 | Ostrowski - Podogov | 1-0 | (chess_960) | unrated |
| 9960 | Nagy - Ostrowski | 0-1 | (chess_960) | unrated |
| 9964 | Ostrowski - Czekaj | 1-0 | (chess_960) | unrated |
| 9965 | Frame - Ostrowski | 0-1 | (chess_960) | unrated |
| 9966 | Ostrowski - Cirulis | 1-0 | (chess_960) | unrated |
| 10747 | Caire - Ostrowski | 1/2-1/2 | (chess) | rated |
| 10753 | Ostrowski - Zubac | 1/2-1/2 | (chess) | rated |
| 10754 | Shwimmer - Ostrowski | 1-0 | (chess) | rated |
| 10755 | Ostrowski - de Vassal | 1/2-1/2 | (chess) | rated |
| 10756 | Brunsteins - Ostrowski | 1/2-1/2 | (chess) | rated |
| 10757 | Ostrowski - Utesch | 1/2-1/2 | (chess) | rated |
| 12878 | Shwimmer - Ostrowski | 1-0 | (chess) | rated |
| 12879 | Ostrowski - Shwimmer | 0-1 | (chess) | rated |
| 12880 | Shwimmer - Ostrowski | 1-0 | (chess) | rated |
| 12881 | Ostrowski - Shwimmer | 1-0 | (chess) | rated |
| 12882 | Shwimmer - Ostrowski | 1-0 | (chess) | rated |
| 12883 | Ostrowski - Shwimmer | 0-1 | (chess) | rated |
| 12884 | Shwimmer - Ostrowski | 1/2-1/2 | (chess) | rated |
| 12885 | Ostrowski - Shwimmer | 0-1 | (chess) | rated |
| 17796 | Lacrosse - Ostrowski | 1/2-1/2 | (chess) | rated |
| 17802 | Ostrowski - Shulga | 1-0 | (chess) | rated |
| 17803 | Marton-Bardocz - Ostrowski | 1/2-1/2 | (chess) | rated |
| 17804 | Ostrowski - Hornung | 1/2-1/2 | (chess) | rated |
| 17805 | Sammut - Ostrowski | 0-1 | (chess) | rated |
| 17806 | Ostrowski - Helmer | 1/2-1/2 | (chess) | rated |
| 22643 | Ostrowski - Simmelink | 1/2-1/2 | (chess) | rated |
| 22644 | Schiller - Ostrowski | 1/2-1/2 | (chess) | rated |
| 22645 | Ostrowski - Helmer | 1/2-1/2 | (chess) | rated |
| 22646 | Moreira - Ostrowski | 1/2-1/2 | (chess) | rated |
| 22647 | Ostrowski - Gueci | 1/2-1/2 | (chess) | rated |
| 22648 | Pecotic - Ostrowski | 1/2-1/2 | (chess) | rated |
| 22806 | Ostrowski - Mueller | 0-1 | (chess) | rated |
| 22807 | Gueci - Ostrowski | 1/2-1/2 | (chess) | rated |
| 22808 | Ostrowski - Burden | 1/2-1/2 | (chess) | rated |
| 22809 | Khachaturov - Ostrowski | 1/2-1/2 | (chess) | rated |
| 22810 | Ostrowski - Walter | 1/2-1/2 | (chess) | rated |
| 22811 | Malpalma - Ostrowski | 0-1 | (chess) | rated |
| 25347 | Ostrowski - Simmelink | 1/2-1/2 | (chess) | rated |
| 25352 | Stephenson - Ostrowski | 0-1 | (chess) | rated |
| 25356 | Ostrowski - Kuhne | 1/2-1/2 | (chess) | rated |
| 25359 | Bezemer - Ostrowski | 0-1 | (chess) | rated |
| 25362 | Ostrowski - Rotaru | 1/2-1/2 | (chess) | rated |
| 25363 | Kreindl - Ostrowski | 1/2-1/2 | (chess) | rated |
| 27031 | Ostrowski - Oortwijn | 1/2-1/2 | (chess) | rated |
| 27036 | Legrand - Ostrowski | 1/2-1/2 | (chess) | rated |
| 27040 | Ostrowski - Mueller | 1/2-1/2 | (chess) | rated |
| 27043 | Helmer - Ostrowski | 1/2-1/2 | (chess) | rated |
| 27045 | Ostrowski - Kubasky | 0-1 | (chess) | rated |
| 27046 | Simmelink - Ostrowski | 1/2-1/2 | (chess) | rated |
| 28074 | Noble - Ostrowski | 1/2-1/2 | (chess) | rated |
| 28080 | Ostrowski - Lowrance | 1/2-1/2 | (chess) | rated |
| 28081 | Brunsteins - Ostrowski | 1-0 | (chess) | rated |
| 28082 | Ostrowski - Banikas | 1/2-1/2 | (chess) | rated |
| 28083 | Shwimmer - Ostrowski | 1/2-1/2 | (chess) | rated |
| 28084 | Ostrowski - de Vassal | 1/2-1/2 | (chess) | rated |
| 36303 | Rotaru - Ostrowski | 1-0 | (chess) | rated |
| 36308 | Ostrowski - Schiller | 1-0 | (chess) | rated |
| 36312 | Drazkowski - Ostrowski | 1/2-1/2 | (chess) | rated |
| 36316 | Ostrowski - Hladky | 1/2-1/2 | (chess) | rated |
| 36317 | Khachaturov - Ostrowski | 1/2-1/2 | (chess) | rated |
| 36318 | Ostrowski - Kruse | 1/2-1/2 | (chess) | rated |
| 43359 | Lemekhov - Ostrowski | 1/2-1/2 | (chess) | rated |
| 43364 | Ostrowski - Kruse | 1/2-1/2 | (chess) | rated |
| 43368 | Timothy - Ostrowski | 0-1 | (chess) | rated |
| 43371 | Ostrowski - Petrolo | 1/2-1/2 | (chess) | rated |
| 43373 | de Vassal - Ostrowski | 1/2-1/2 | (chess) | rated |
| 43375 | Ostrowski - Alexandr | 1-0 | (chess) | rated |
| 45655 | Ostrowski - Nichols | 1/2-1/2 | (chess) | rated |
| 45656 | Basiliev - Ostrowski | 1/2-1/2 | (chess) | rated |
| 45657 | Ostrowski - Simmelink | 1-0 | (chess) | rated |
| 45658 | Hamby - Ostrowski | 1/2-1/2 | (chess) | rated |
| 45659 | Ostrowski - Schild | 1-0 | (chess) | rated |
| 45660 | Ould Ahmed - Ostrowski | 0-1 | (chess) | rated |