| Feb 4, 2024 | Joseph Zeltsan | ½–½ | Mykola Bortnyk | Round 5: Joseph Zeltsan - Mykola Bortnyk | Philidor Defense: Exchange Variation | |
| Feb 4, 2024 | Max Mottola | 0–1 | Joseph Zeltsan | Round 4: Max Mottola - Joseph Zeltsan | Queen's Pawn Game: London System | |
| Feb 3, 2024 | Joseph Zeltsan | ½–½ | John Hughes | Round 3: Joseph Zeltsan - John Hughes | Sicilian Defense: Paulsen-Basman Defense | |
| Feb 3, 2024 | Joseph Zeltsan | ½–½ | Eshaan Hebbar | Round 2: Joseph Zeltsan - Eshaan Hebbar | King's Indian Attack: Yugoslav Variation | |
| Feb 2, 2024 | James Marsh | 0–1 | Joseph Zeltsan | Round 1: James Marsh - Joseph Zeltsan | English Opening: Anglo-Indian Defense, King's Knight Variation | |
| Jan 7, 2024 | Joseph Zeltsan | 1–0 | Michael Li | Round 5: Joseph Zeltsan - Michael Li | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Jan 7, 2024 | Mykola Bortnyk | 1–0 | Joseph Zeltsan | Round 4: Mykola Bortnyk - Joseph Zeltsan | Sicilian Defense: Alapin Variation | |
| Jan 6, 2024 | Joseph Zeltsan | 1–0 | Max Rosenthal | Round 3: Joseph Zeltsan - Max Rosenthal | King's Indian Attack | |
| Jan 6, 2024 | Joseph Zeltsan | 1–0 | Eshaan Hebbar | Round 2: Joseph Zeltsan - Eshaan Hebbar | Zukertort Opening: Reversed Grünfeld | |
| Jan 5, 2024 | James Marsh | 0–1 | Joseph Zeltsan | Round 1: James Marsh Player 23 - Joseph Zeltsan Player 3 | Catalan Opening: Open Defense, Classical Line | |
| Dec 21, 2023 | Christopher Woojin Yoo | 1–0 | Joseph Zeltsan | Round 8: Christopher Woojin Yoo - Joseph Zeltsan | Queen's Pawn Game: London System | |
| Dec 21, 2023 | Joseph Zeltsan | 0–1 | Yasser Quesada Perez | Round 7: Joseph Zeltsan - Yasser Quesada Perez | Sicilian Defense: Old Sicilian | |
| Dec 20, 2023 | Safal Bora | ½–½ | Joseph Zeltsan | Round 6: Safal Bora - Joseph Zeltsan | Catalan Opening: Open Defense, Classical Line | |
| Dec 19, 2023 | Joseph Zeltsan | 1–0 | Praveen Balakrishnan | Round 5: Joseph Zeltsan - Praveen Balakrishnan | Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation | |
| Dec 19, 2023 | Harsha Bharathakoti | ½–½ | Joseph Zeltsan | Round 4: Harsha Bharathakoti - Joseph Zeltsan | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Dec 18, 2023 | Joseph Zeltsan | ½–½ | Aram Hakobyan | Round 3: Joseph Zeltsan - Aram Hakobyan | Ruy Lopez: Closed, Martinez Variation | |
| Dec 10, 2023 | Zachary Tanenbaum | ½–½ | Joseph Zeltsan | Round 6: Zachary Tanenbaum - Joseph Zeltsan | Nimzowitsch Defense: Williams Variation | |
| Dec 10, 2023 | Joseph Zeltsan | 1–0 | Grant Xu | Round 5: Joseph Zeltsan - Grant Xu | Modern Defense: Standard Line | |
| Dec 9, 2023 | Mykola Bortnyk | ½–½ | Joseph Zeltsan | Round 4: Mykola Bortnyk - Joseph Zeltsan | Sicilian Defense: Four Knights Variation | |
| Dec 9, 2023 | Joseph Zeltsan | 1–0 | Djurabek Khamrakulov | Round 3: Joseph Zeltsan - Djurabek Khamrakulov | Petrov's Defense: Modern Attack, Center Variation | |
| Dec 8, 2023 | Krish Bhandari | 0–1 | Joseph Zeltsan | Round 1: Krish Bhandari - Joseph Zeltsan | Queen's Pawn Game: Colle System | |
| Aug 28, 2023 | Joseph Zeltsan | ½–½ | Shaked Tifferet | Round 6: Joseph Zeltsan - Shaked Tifferet | Ruy Lopez: Berlin Defense, Berlin Wall | |
| Sep 4, 2022 | Justin Sarkar | ½–½ | Joseph Zeltsan | Round 9: Justin Sarkar - Joseph Zeltsan | Sicilian Defense: Moscow Variation | |
| Sep 4, 2022 | Joseph Zeltsan | 1–0 | Justin Chen | Round 8: Joseph Zeltsan - Justin Chen | Queen's Gambit Declined: Modern Variation | |
| Sep 4, 2022 | Kassa Korley | ½–½ | Joseph Zeltsan | Round 7: Kassa Korley - Joseph Zeltsan | Neo-Grünfeld Defense: Classical Variation, Original Defense | |
| Sep 4, 2022 | Joseph Zeltsan | 1–0 | Grant Xu | Round 6: Joseph Zeltsan - Grant Xu | French Defense: Winawer Variation, Poisoned Pawn Variation | |
| Sep 3, 2022 | Danila Poliannikov | 0–1 | Joseph Zeltsan | Round 5: Danila Poliannikov - Joseph Zeltsan | Sicilian Defense: Najdorf Variation, Zagreb Variation | |
| Sep 3, 2022 | Joseph Zeltsan | 0–1 | Mark Paragua | Round 4: Joseph Zeltsan - Mark Paragua | Sicilian Defense: Najdorf Variation, Main Line | |
| Sep 2, 2022 | Joseph Zeltsan | 0–1 | Djurabek Khamrakulov | Round 3: Joseph Zeltsan - Djurabek Khamrakulov | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Sep 2, 2022 | Gergely Kantor | ½–½ | Joseph Zeltsan | Round 2: Gergely Kantor - Joseph Zeltsan | Indian Defense: Normal Variation | |
| Sep 2, 2022 | Joseph Zeltsan | 0–1 | Sandeep Sethuraman | Round 1: Joseph Zeltsan - Sandeep Sethuraman | Queen's Gambit Declined: Three Knights, Vienna Variation | |
| Aug 16, 2022 | David Brodsky | 1–0 | Joseph Zeltsan | Round 8: David Brodsky - Joseph Zeltsan | Sicilian Defense: Najdorf Variation, Freak Attack | |
| Aug 16, 2022 | Andrew Tang | 1–0 | Joseph Zeltsan | Round 7: Andrew Tang - Joseph Zeltsan | Queen's Pawn Game: London System | |
| Aug 15, 2022 | Joseph Zeltsan | 1–0 | Farai Mandizha | Round 6: Joseph Zeltsan - Farai Mandizha | French Defense: Winawer Variation, Warsaw Variation | |
| Aug 15, 2022 | Joseph Zeltsan | ½–½ | John Michael Burke | Round 2: Joseph Zeltsan - John Michael Burke | Ruy Lopez: Morphy Defense | |
| Aug 15, 2022 | Semen Khanin | 1–0 | Joseph Zeltsan | Round 3: Semen Khanin - Joseph Zeltsan | King's Indian Defense: Semi-Averbakh System | |
| Jul 11, 2022 | Denis Shmeliov | ½–½ | Joseph Zeltsan | Round 9: Denis Shmeliov - Joseph Zeltsan | Queen's Gambit Declined: Ragozin Defense | |
| Jul 11, 2022 | Joseph Zeltsan | ½–½ | Leonid Yudasin | Round 8: Joseph Zeltsan - Leonid Yudasin | French Defense: Rubinstein Variation, Kasparov Attack | |
| Jul 10, 2022 | Bryce Tiglon | ½–½ | Joseph Zeltsan | Round 7: Bryce Tiglon - Joseph Zeltsan | Sicilian Defense: Moscow Variation | |
| Jul 10, 2022 | Joseph Zeltsan | ½–½ | Mark Paragua | Round 6: Joseph Zeltsan - Mark Paragua | Sicilian Defense: French Variation | |
| Jul 9, 2022 | Aaron Jacobson | 0–1 | Joseph Zeltsan | Round 5: Aaron Jacobson - Joseph Zeltsan | Sicilian Defense: Najdorf Variation | |
| Jul 9, 2022 | Joseph Zeltsan | ½–½ | Kyron Griffith | Round 4: Joseph Zeltsan - Kyron Griffith | Caro-Kann Defense: Advance Variation, Tal Variation | |
| Jul 8, 2022 | Aleksandr Lenderman | ½–½ | Joseph Zeltsan | Round 3: Aleksandr Lenderman - Joseph Zeltsan | Petrov's Defense | |
| Jul 8, 2022 | Joseph Zeltsan | ½–½ | Milind Maiti | Round 2: Joseph Zeltsan - Milind Maiti | Petrov's Defense: Modern Attack, Center Variation | |
| Jul 8, 2022 | Joseph Zeltsan | 1–0 | Qibiao Wang | Round 1: Joseph Zeltsan - Qibiao Wang | Ruy Lopez: Open, Bernstein Variation | |
| Jan 17, 2022 | Samrug Narayanan | 0–1 | Joseph Zeltsan | Round 9: Samrug Narayanan - Joseph Zeltsan | Sicilian Defense: Moscow Variation | |
| Jan 17, 2022 | Joseph Zeltsan | 1–0 | Doug Eckert | Round 8: Joseph Zeltsan - Doug Eckert | Queen's Gambit Declined: Ragozin Defense | |
| Jan 16, 2022 | Zachary Dukic | 0–1 | Joseph Zeltsan | Round 7: Zachary Dukic - Joseph Zeltsan | Semi-Slav Defense: Chigorin Defense | |
| Jan 16, 2022 | Joseph Zeltsan | 1–0 | Kyron Griffith | Round 6: Joseph Zeltsan - Kyron Griffith | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jan 15, 2022 | Joseph Zeltsan | 0–1 | Srivatshav P Rahul | Round 5: Joseph Zeltsan - Srivatshav P Rahul | Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack | |
| Jan 15, 2022 | Lev Paciorkowski | 1–0 | Joseph Zeltsan | Round 4: Lev Paciorkowski - Joseph Zeltsan | Sicilian Defense: Modern Variations | |
| Jan 14, 2022 | Joseph Zeltsan | 1–0 | Byambaa Uyanga | Round 3: Joseph Zeltsan - Byambaa Uyanga | King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense | |
| Jan 14, 2022 | Leonid Yudasin | 1–0 | Joseph Zeltsan | Round 2: Leonid Yudasin - Joseph Zeltsan | Sicilian Defense: Moscow Variation | |
| Jan 14, 2022 | Joseph Zeltsan | * | Akira Nakada | Round 1: Joseph Zeltsan - Akira Nakada | ? | |
| Nov 25, 2021 | Joseph Zeltsan | 0–1 | Ehsan Ghaemmaghami | Round 2: Joseph Zeltsan - Ehsan Ghaemmaghami | Caro-Kann Defense: Maróczy Variation | |
| Jul 3, 2021 | Joseph Zeltsan | 0–1 | Carissa Yip | 49th Annual World Open | King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System | |