| Jun 25, 2026 | Bartell | 1–0 | Kozower | Round 1: Bartell, Thomas - Kozower, Ethan | Catalan Opening: Closed | |
| May 17, 2026 | Kozower | ½–½ | Jandhyala | Round 5: Kozower, Ethan - Jandhyala, Yegna Sairam | English Opening: King's English Variation | |
| May 17, 2026 | Kozower | 1–0 | Derek Zhang | Round 4: Kozower, Ethan - Derek Zhang | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| May 16, 2026 | Luc William Crim Hoffman | 1–0 | Kozower | Round 3: Luc William Crim Hoffman - Kozower, Ethan | Ruy Lopez: Open | |
| May 16, 2026 | Kozower | 1–0 | Tran | Round 2: Kozower, Ethan - Tran, Timothy | Dutch Defense: Rubinstein Variation | |
| May 15, 2026 | Dubey | 0–1 | Kozower | Round 1: Dubey, Shiv - Kozower, Ethan | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 22, 2026 | Bryan A Weisz | ½–½ | Kozower | Round 4: Bryan A Weisz - Kozower, Ethan | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 22, 2026 | Kozower | 1–0 | William Alexander Aepli | Round 3: Kozower, Ethan - William Alexander Aepli | English Opening: Mikenas-Carls Variation | |
| Apr 22, 2026 | Miller | ½–½ | Kozower | Round 2: Miller, Rachel - Kozower, Ethan | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 21, 2026 | Kozower | 1–0 | Alec Hyunmook Choi | Round 1: Kozower, Ethan - Alec Hyunmook Choi | English Opening: King's English Variation | |
| Mar 8, 2026 | Doddapaneni | ½–½ | Kozower | Round 5: Doddapaneni, Viyaan Krishna - Kozower, Ethan | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Mar 7, 2026 | Zeutzius | 1–0 | Kozower | Round 3: Zeutzius, Jonas Michael - Kozower, Ethan | Queen's Indian Defense: Kasparov Variation | |
| Mar 5, 2026 | Kozower | 0–1 | Brodsky | Round 2: Kozower, Ethan - Brodsky, David | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| Feb 13, 2026 | Delgado Ramirez | 1–0 | Kozower | Round 1: Delgado Ramirez, Neuris - Kozower, Ethan | Three Knights Opening: Schlechter Variation | |
| Dec 16, 2025 | Bora | 1–0 | Kozower | Round 5: Bora, Safal - Kozower, Ethan | English Opening: Symmetrical Variation, Four Knights Variation | |
| Dec 14, 2025 | Kozower | 1–0 | Wu | Round 4: Kozower, Ethan - Wu, Winsley | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Dec 13, 2025 | Stancil | 0–1 | Kozower | Round 3: Stancil, Kimani - Kozower, Ethan | Bishop's Opening: Vienna Hybrid, Hromádka Variation | |
| Dec 13, 2025 | Berg | 1–0 | Kozower | Round 1: Berg, George - Kozower, Ethan | Sicilian Defense: Four Knights Variation | |
| Nov 16, 2025 | Connor Wang | ½–½ | Kozower | Round 5: Connor Wang - Kozower, Ethan | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Nov 16, 2025 | Kozower | ½–½ | Zhang | Round 4: Kozower, Ethan - Zhang, Andrew | English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation | |
| Nov 15, 2025 | Brodsky | 1–0 | Kozower | Round 3: Brodsky, David - Kozower, Ethan | Queen's Indian Defense: Fianchetto Variation | |
| Nov 15, 2025 | Sarkar | ½–½ | Kozower | Round 2: Sarkar, Justin - Kozower, Ethan | Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation | |
| Oct 22, 2025 | Kozower | 0–1 | Evan | Round 2: Kozower, Ethan - Evan | Slav Defense: Quiet Variation, Schallopp Defense | |
| Oct 18, 2025 | Sommerstein | 0–1 | Kozower | Round 2: Sommerstein, Adrian Harrison - Kozower, Ethan | Ruy Lopez: Morphy Defense, Wormald Attack | |
| Oct 17, 2025 | Kozower | 1–0 | Bernstein | Round 1: Kozower, Ethan - Bernstein, Charles B | English Opening: Symmetrical Variation, Four Knights Variation | |
| Oct 17, 2025 | Kozower | 0–1 | Das | Round 3: Kozower, Ethan - Das, Aditeya | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Oct 5, 2025 | Luc William Crim Hoffman | 0–1 | Kozower | Round 5: Luc William Crim Hoffman - Kozower, Ethan | King's Knight Opening: Konstantinopolsky | |
| Oct 4, 2025 | Kozower | ½–½ | Lee | Round 3: Kozower, Ethan - Lee, Rohan | King's Indian Defense: Semi-Averbakh System | |
| Jun 29, 2025 | Kozower | * | Rajmohan | 18th Annual Philadephia International | ? | |
| Jun 28, 2025 | Kozower | * | Yue | 18th Annual Philadephia International | ? | |
| Jun 22, 2025 | Kylan Huang | ½–½ | Kozower | Round 5: Kylan Huang - Kozower, Ethan | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Jun 21, 2025 | Goel | 0–1 | Kozower | Round 3: Goel, Raben - Kozower, Ethan | English Opening: King's English Variation, Taimanov Variation | |
| Jun 20, 2025 | Solomon | ½–½ | Kozower | Round 1: Solomon, Ciprian - Kozower, Ethan | English Opening: Symmetrical Variation, Ultra-Symmetrical Variation | |
| Jun 8, 2025 | Kozower | 1–0 | Yu | Round 5: Kozower, Ethan - Yu, Vincent Zhiwen | English Opening: Adorjan Defense | |
| Jun 8, 2025 | Hebbar | 1–0 | Kozower | Round 4: Hebbar, Eshaan - Kozower, Ethan | Indian Defense: Dzindzi-Indian Defense | |
| Jun 7, 2025 | Kyle Dong | ½–½ | Kozower | Round 3: Kyle Dong - Kozower, Ethan | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Jun 7, 2025 | Kozower | ½–½ | Rama | Round 2: Kozower, Ethan - Rama, Tejas | English Opening: Symmetrical Variation, Four Knights Variation | |
| May 18, 2025 | Kozower | ½–½ | Bonin | Round 5: Kozower, Ethan - Bonin, Jay | French Defense: Classical Variation, Tartakower Variation | |
| May 18, 2025 | Kozower | 1–0 | Berg | Round 4: Kozower, Ethan - Berg, George | English Opening: Symmetrical Variation, Four Knights Variation | |
| May 17, 2025 | Liang | 0–1 | Kozower | Round 3: Liang, Melanie - Kozower, Ethan | Scotch Game: Classical Variation | |
| May 16, 2025 | Zhang | 1–0 | Kozower | Round 1: Zhang, Andrew - Kozower, Ethan | Four Knights Game: Scotch Variation, Schmid Defense | |
| Apr 6, 2025 | Kozower | 0–1 | Marzouq | Round 4: Kozower, Ethan - Marzouq, Chowdhury | English Opening: Caro-Kann Defensive System | |
| Apr 4, 2025 | Hoffman | 1–0 | Kozower | Round 1: Hoffman, Luc - Kozower, Ethan | Four Knights Game | |
| Mar 18, 2025 | Kozower | 0–1 | Zhu | Round 1: Kozower, Ethan - Zhu, Linxi | Nimzo-Indian Defense: Classical Variation | |
| Feb 9, 2025 | Kozower | 0–1 | Hebbar | Round 5: Kozower, Ethan - Hebbar, Eshaan | English Opening: Anglo-Indian Defense | |
| Feb 9, 2025 | Muthukumaran | ½–½ | Kozower | Round 4: Muthukumaran, Gurru - Kozower, Ethan | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 8, 2025 | Kozower | 1–0 | Panico | Round 2: Kozower, Ethan - Panico, Nick | Dutch Defense: Leningrad Variation | |
| Feb 8, 2025 | Kozower | 0–1 | Hoffman | Round 3: Kozower, Ethan - Hoffman, Luc | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Feb 7, 2025 | Colwell | 0–1 | Kozower | Round 1: Colwell, Andrew - Kozower, Ethan | Nimzo-Indian Defense: Classical Variation, Keres Defense | |
| Dec 17, 2024 | Putnam | 1–0 | Kozower | Round 1: Putnam, Liam - Kozower, Ethan | Queen's Indian Defense: Fianchetto Variation, Kramnik Variation | |
| Nov 1, 2024 | Li | 1–0 | Kozower | Round 1: Li, Aiden Linyuan - Kozower, Ethan | Ruy Lopez: Cozio Defense | |
| Sep 18, 2024 | Ling | ½–½ | Kozower | Round 4: Ling, Chenxuan - Kozower, Ethan | Nimzo-Indian Defense: Classical Variation | |
| Sep 6, 2024 | Lee | 0–1 | Kozower | Round 1: Lee, Rohan - Kozower, Ethan | King's Indian Attack | |
| Jun 9, 2024 | Kozower | 1–0 | Berg | Round 5: Kozower, Ethan - Berg, George | Sicilian Defense: Najdorf Variation, English Attack | |
| Jun 9, 2024 | Derek Chen | ½–½ | Kozower | Round 4: Derek Chen - Kozower, Ethan | Sicilian Defense: Four Knights Variation | |
| Jun 9, 2024 | Chan | ½–½ | Maahir Patel | Round 4: Chan, Kyle - Maahir Patel | Sicilian Defense: Four Knights Variation | |
| Jun 8, 2024 | Kozower | 0–1 | Kyle Dong | Round 3: Kozower, Ethan - Kyle Dong | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Jun 8, 2024 | Rosenthal | ½–½ | Kozower | Round 2: Rosenthal, Max Manuel - Kozower, Ethan | Sicilian Defense: Four Knights Variation, Exchange Variation | |
| Jun 7, 2024 | Kozower | ½–½ | Daniel Johnston | Round 1: Kozower, Ethan - Daniel Johnston | Sicilian Defense: Taimanov Variation, Bastrikov Variation | |
| May 3, 2024 | Kozower | 0–1 | Nkululeko | Round 1: Kozower, Ethan - Nkululeko, Nkosi | Three Knights Opening | |
| Apr 21, 2024 | Panico | 0–1 | Kozower | Round 5: Panico, Nick - Kozower, Ethan | Bird Opening | |
| Apr 21, 2024 | Kozower | 1–0 | Paruchuri | Round 4: Kozower, Ethan - Paruchuri, Naveen | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 20, 2024 | Stancil | 1–0 | Kozower | Round 2: Stancil, Kimani - Kozower, Ethan | Sicilian Defense: Four Knights Variation | |
| Apr 20, 2024 | Kozower | 1–0 | Singh | Round 1: Kozower, Ethan - Singh, Ian Avery | Sicilian Defense: French Variation | |
| Apr 14, 2024 | Ayyappan | 1–0 | Kozower | Round 5: Ayyappan, Santhosh - Kozower, Ethan | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Apr 12, 2024 | Kozower | 0–1 | Putnam | Round 1: Kozower, Ethan - Putnam, Liam | Sicilian Defense: Moscow Variation | |
| Mar 1, 2024 | Hughes | 1–0 | Kozower | Round 1: John Hughes - Kozower, Ethan | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Dec 15, 2024 | Kozower | 0–1 | Klenoff | Round 7: Kozower, Ethan - Klenoff, Caleb | Benoni Defense: Knight's Tour Variation | |
| Dec 13, 2024 | Hoffman | 0–1 | Kozower | Round 2: Hoffman, Luc - Kozower, Ethan | Indian Defense: Knights Variation | |
| Dec 12, 2024 | Kozower | 0–1 | Lin | Round 1: Kozower, Ethan - Lin, Bryan Enming | Sicilian Defense: Four Knights Variation, Cobra Variation | |
| Dec 7, 2024 | Kozower | 0–1 | Sarkar | Round 2: Kozower, Ethan - Sarkar, Justin | Nimzo-Indian Defense: Normal Variation, Gligoric System | |
| Dec 7, 2024 | Bonin | 1–0 | Kozower | Round 3: Bonin, Jay - Kozower, Ethan | Trompowsky Attack: Classical Defense, Big Center Variation | |
| Dec 6, 2024 | Kozower | 1–0 | Berg | Round 1: Kozower, Ethan - Berg, George | Benko Gambit Accepted: King Walk Variation | |
| Nov 3, 2024 | Ayyappan | ½–½ | Kozower | Round 5: Ayyappan, Santhosh - Kozower, Ethan | Sicilian Defense: Four Knights Variation | |
| Nov 2, 2024 | Tadevosyan | 1–0 | Kozower | Round 3: Tadevosyan, Levon - Kozower, Ethan | Sicilian Defense: Keres Variation | |
| Oct 13, 2024 | Kozower | 0–1 | Tanenbaum | Round 3: Kozower, Ethan - Tanenbaum, Zachary | Queen's Pawn Game: Colle System | |
| Oct 13, 2024 | Tanenbaum | 1–0 | Kozower | Round 4: Tanenbaum, Zachary - Kozower, Ethan | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 12, 2024 | Tang | 1–0 | Kozower | Round 2: Tang, Andrew - Kozower, Ethan | Nimzo-Indian Defense: Classical Variation | |
| Oct 12, 2024 | Adewumi | 1–0 | Kozower | Round 4: Adewumi, Tanitoluwa - Kozower, Ethan | Indian Defense: Dzindzi-Indian Defense | |
| Sep 7, 2024 | Kozower | 0–1 | Brain | Round 2: Kozower, Ethan - Brain, Logan | Four Knights Game: Scotch Variation Accepted | |
| Sep 7, 2024 | Venkatesh | 1–0 | Kozower | Round 3: Venkatesh, Narayan - Kozower, Ethan | Nimzo-Indian Defense: Rubinstein System, Rubinstein Variation | |
| Aug 17, 2024 | Kozower | 1–0 | Doddapaneni | Round 2: Kozower, Ethan - Doddapaneni, Viyaan Krishna | English Opening: Agincourt Defense, Wimpy System | |
| Aug 17, 2024 | Tao | ½–½ | Kozower | Round 3: Tao, Jeremy - Kozower, Ethan | Nimzo-Indian Defense: Kmoch Variation | |
| Mar 31, 2024 | Kozower | 0–1 | Manon-og | 16 Annual Open at Foxwoods | Sicilian Defense: Najdorf Variation, English Attack | |
| Mar 31, 2024 | Slatin | 1–0 | Kozower | 16 Annual Open at Foxwoods | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| — | Kozower | 0–1 | Jacobson | Round 1: Kozower, Ethan - Jacobson, Aaron | English Opening: King's English Variation | |