Begin Rating:
300
Present Rating:
594
Highest Rating ever:
594 (2024-04-29, position: 123)
Lowest Rating ever:
252 (2023-10-16, position: 153)
Matches played (101):
| [date] | [player A] | [player B] | [gms A] | [gms B] | [pnt A] | [pnt B] |
| 2024-04-18 | Jacek Stefankowski | Nate Levin | 3 | 0 | 11 | -11 |
| 2024-04-18 | Sung Kang | Jacek Stefankowski | 1 | 3 | -15 | 15 |
| 2024-04-18 | Jacek Stefankowski | Ken K | 3 | 0 | 9 | -9 |
| 2024-04-18 | Jacek Stefankowski | Nenad Bach | 2 | 3 | -13 | 13 |
| 2024-04-18 | Jacek Stefankowski | Chong Jue | 3 | 0 | 13 | -13 |
| 2024-04-16 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 2 | -1 | 1 |
| 2024-04-16 | Jacek Stefankowski | Sung Kang | 0 | 3 | -29 | 29 |
| 2024-04-11 | Steve Burka [RH] | Jacek Stefankowski | 3 | 1 | 3 | -3 |
| 2024-04-11 | Roozbeh Daneshvar | Jacek Stefankowski | 1 | 3 | -22 | 22 |
| 2024-04-11 | Margie Alley | Jacek Stefankowski | 2 | 3 | -14 | 14 |
| 2024-04-11 | Jeff Baker | Jacek Stefankowski | 3 | 0 | 11 | -11 |
| 2024-04-09 | Margie Alley | Jacek Stefankowski | 2 | 3 | -16 | 16 |
| 2024-04-09 | Jacek Stefankowski | Nenad Bach | 3 | 2 | -3 | 3 |
| 2024-03-12 | Sung Kang | Jacek Stefankowski | 3 | 0 | 21 | -21 |
| 2024-03-12 | Jacek Stefankowski | Nenad Bach | 3 | 1 | 8 | -8 |
| 2024-03-12 | Roozbeh Daneshvar | Jacek Stefankowski | 1 | 3 | -23 | 23 |
| 2024-03-12 | Rick Kriska | Jacek Stefankowski | 3 | 1 | -3 | 3 |
| 2024-03-05 | Jacek Stefankowski | Paul Ng [LH] | 3 | 0 | 21 | -21 |
| 2024-03-05 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 1 | -8 | 8 |
| 2024-03-05 | Sung Kang | Jacek Stefankowski | 3 | 2 | -5 | 5 |
| 2024-02-29 | Jonathan Smalls | Jacek Stefankowski | 3 | 0 | 11 | -11 |
| 2024-02-29 | Jacek Stefankowski | Chong Jue | 3 | 1 | 3 | -3 |
| 2024-02-29 | Nenad Bach | Jacek Stefankowski | 0 | 3 | -26 | 26 |
| 2024-02-29 | Roozbeh Daneshvar | Jacek Stefankowski | 1 | 3 | -26 | 26 |
| 2024-02-27 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 2 | -18 | 18 |
| 2024-02-27 | Jacek Stefankowski | Mickey Joseph | 3 | 0 | 6 | -6 |
| 2024-02-22 | Adam Rosen | Jacek Stefankowski | 3 | 0 | 22 | -22 |
| 2024-02-22 | Willy DAriano | Jacek Stefankowski | 3 | 0 | 16 | -16 |
| 2024-02-22 | David Wilson | Jacek Stefankowski | 2 | 3 | -13 | 13 |
| 2024-02-22 | Andrei O | Jacek Stefankowski | 0 | 3 | -30 | 30 |
| 2024-02-20 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 0 | 3 | -3 |
| 2024-02-20 | Jacek Stefankowski | Geeta Kumthekar | 3 | 0 | 19 | -19 |
| 2024-02-20 | Jacek Stefankowski | Syed Hossain | 3 | 0 | 9 | -9 |
| 2024-01-30 | Jacek Stefankowski | Geeta Kumthekar | 3 | 0 | 9 | -9 |
| 2024-01-30 | Sung Kang | Jacek Stefankowski | 3 | 0 | 17 | -17 |
| 2024-01-30 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 1 | 2 | -2 |
| 2024-01-30 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 0 | 3 | -3 |
| 2024-01-25 | Nenad Bach | Jacek Stefankowski | 1 | 3 | -24 | 24 |
| 2024-01-25 | Rick Kriska | Jacek Stefankowski | 3 | 2 | -11 | 11 |
| 2024-01-25 | Jeff Baker | Jacek Stefankowski | 3 | 0 | 4 | -4 |
| 2024-01-25 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 0 | 16 | -16 |
| 2024-01-23 | Nenad Bach | Jacek Stefankowski | 0 | 3 | -42 | 42 |
| 2024-01-23 | Rick Kriska | Jacek Stefankowski | 3 | 0 | 8 | -8 |
| 2024-01-23 | Sung Kang | Jacek Stefankowski | 3 | 1 | 0 | 0 |
| 2024-01-23 | Eric Borkowski | Jacek Stefankowski | 3 | 1 | -6 | 6 |
| 2024-01-18 | Jacek Stefankowski | Geeta Kumthekar | 3 | 0 | 13 | -13 |
| 2024-01-18 | Jacek Stefankowski | Soroush Abbaspour | 1 | 3 | -18 | 18 |
| 2024-01-18 | Jacek Stefankowski | Nate Levin | 3 | 0 | 14 | -14 |
| 2024-01-11 | David Melrose | Jacek Stefankowski | 3 | 1 | 12 | -12 |
| 2024-01-11 | Jacek Stefankowski | Hayden Fung | 3 | 1 | 2 | -2 |
| 2024-01-11 | Jacek Stefankowski | Josh Rosen | 3 | 1 | -2 | 2 |
| 2024-01-11 | Jacek Stefankowski | Todd Rosen | 3 | 0 | 9 | -9 |
| 2024-01-11 | Jacek Stefankowski | Julia Zhou | 3 | 0 | 10 | -10 |
| 2024-01-11 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 0 | 5 | -5 |
| 2024-01-04 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 2 | -5 | 5 |
| 2024-01-04 | David Wilson | Jacek Stefankowski | 3 | 0 | 14 | -14 |
| 2024-01-04 | Jacek Stefankowski | Guillermo Bilbao | 3 | 0 | 24 | -24 |
| 2024-01-04 | Jacek Stefankowski | Matthew Macalintal | 1 | 3 | -14 | 14 |
| 2024-01-02 | Matthew Macalintal | Jacek Stefankowski | 3 | 1 | 12 | -12 |
| 2024-01-02 | Ken Brown | Jacek Stefankowski | 3 | 0 | 9 | -9 |
| 2024-01-02 | Roozbeh Daneshvar | Jacek Stefankowski | 1 | 3 | -29 | 29 |
| 2024-01-02 | Jacek Stefankowski | Hayden Fung | 3 | 0 | 14 | -14 |
| 2023-11-30 | Jacek Stefankowski | Todd Rosen | 3 | 0 | 17 | -17 |
| 2023-11-30 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 0 | 6 | -6 |
| 2023-11-30 | Jacek Stefankowski | Josh Rosen | 3 | 0 | 12 | -12 |
| 2023-11-30 | Jacek Stefankowski | Soroush Abbaspour | 1 | 3 | -15 | 15 |
| 2023-11-28 | Rick Kriska | Jacek Stefankowski | 3 | 0 | 7 | -7 |
| 2023-11-28 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 1 | -6 | 6 |
| 2023-11-28 | Jacek Stefankowski | Hayden Fung | 3 | 0 | 16 | -16 |
| 2023-11-28 | Nenad Bach | Jacek Stefankowski | 3 | 2 | -12 | 12 |
| 2023-11-21 | Rick Kriska | Jacek Stefankowski | 3 | 0 | 7 | -7 |
| 2023-11-21 | Sung Kang | Jacek Stefankowski | 3 | 0 | 5 | -5 |
| 2023-11-21 | Jacek Stefankowski | Gowri Gopikrishna | 3 | 0 | 6 | -6 |
| 2023-11-21 | Jacek Stefankowski | Nate Levin | 3 | 0 | 16 | -16 |
| 2023-11-16 | Nenad Bach | Jacek Stefankowski | 3 | 2 | -15 | 15 |
| 2023-11-16 | Jonathan Smalls | Jacek Stefankowski | 3 | 0 | 8 | -8 |
| 2023-11-16 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 0 | 9 | -9 |
| 2023-11-16 | Jacek Stefankowski | Soroush Abbaspour | 2 | 3 | -8 | 8 |
| 2023-11-14 | Jacek Stefankowski | Tom McGuigan | 3 | 1 | 7 | -7 |
| 2023-11-14 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 2 | -13 | 13 |
| 2023-11-07 | Charles Braue | Jacek Stefankowski | 3 | 2 | -10 | 10 |
| 2023-11-07 | Matthew Macalintal | Jacek Stefankowski | 1 | 3 | -20 | 20 |
| 2023-11-02 | Josh Gladstone | Jacek Stefankowski | 3 | 0 | 8 | -8 |
| 2023-11-02 | David Wilson | Jacek Stefankowski | 3 | 1 | -1 | 1 |
| 2023-11-02 | Soroush Abbaspour | Jacek Stefankowski | 3 | 2 | 4 | -4 |
| 2023-10-31 | Victor Lee | Jacek Stefankowski | 3 | 0 | 13 | -13 |
| 2023-10-31 | Charles Braue | Jacek Stefankowski | 3 | 0 | 13 | -13 |
| 2023-10-26 | Josh Gladstone | Jacek Stefankowski | 3 | 1 | -3 | 3 |
| 2023-10-26 | Soroush Abbaspour | Jacek Stefankowski | 1 | 3 | -16 | 16 |
| 2023-10-24 | Soroush Abbaspour | Jacek Stefankowski | 2 | 3 | -10 | 10 |
| 2023-10-24 | Jacek Stefankowski | Frank Valentine | 3 | 1 | 12 | -12 |
| 2023-10-17 | Soroush Abbaspour | Jacek Stefankowski | 0 | 3 | -31 | 31 |
| 2023-10-17 | Frank Valentine | Jacek Stefankowski | 3 | 1 | 11 | -11 |
| 2023-10-12 | Maya Barmecha | Jacek Stefankowski | 3 | 2 | 1 | -1 |
| 2023-10-12 | Joe Jimenez | Jacek Stefankowski | 3 | 1 | 10 | -10 |
| 2023-10-12 | Soroush Abbaspour | Jacek Stefankowski | 3 | 1 | 8 | -8 |
| 2023-10-10 | Matthew Macalintal | Jacek Stefankowski | 3 | 1 | 10 | -10 |
| 2023-10-10 | Roozbeh Daneshvar | Jacek Stefankowski | 3 | 0 | 10 | -10 |
| 2023-10-10 | Jacek Stefankowski | Siya Arora | 3 | 0 | 12 | -12 |
| 2023-10-10 | Charles Braue | Jacek Stefankowski | 3 | 0 | 10 | -10 |
| 2023-10-10 | Lucian Iacob | Jacek Stefankowski | 3 | 0 | 11 | -11 |