Here is a historical list of the winners of the National Open
| # | Year | Winners | Players | Dates | Venue | # Rounds | Winner Score |
|---|---|---|---|---|---|---|---|
| 1st | 1965 | Robert Byrne, Samuel Reshevsky** | 138 | Feb 7-13 | Stardust, Las Vegas, NV | 8 | 7 |
| 2nd | 1966 | Pal Benko**/*** | 116 | Feb 27-Mar 4 | Stardust, Las Vegas, NV | 8 | 7.5 |
| 1967 | Not held | Feb 26-Mar 3 | Stardust, Las Vegas, NV | ||||
| 3rd | 1968 | Pal Benko** | 111 | Mar 24-29 | Sahara-Tahoe, Lake Tahoe, NV | 8 | 7.5 |
| 1969 | Not held | ||||||
| 4th | 1970 | Arthur Bisguier, Larry Evans | 111 | Mar 1-6 | John Ascuaga’s Nugget, Sparks, NV | 8 | 7 |
| 5th | 1971 | Larry Evans**, Walter Browne, Svetozar Gligoric, William Martz, James Tarjan, John Grefe, Roy Ervin | 134 | Mar 7-12 | John Ascuaga’s Nugget, Sparks, NV | 8 | 6.5 |
| 6th | 1972 | Walter Browne, Louis Levy | 134 | Mar 5-10 | John Ascuaga’s Nugget, Sparks, NV | 8 | 7 |
| 7th | 1973 | Walter Browne**, Laszlo Szabo, James Tarjan | 246 | Mar 11-16 | Stardust, Las Vegas, NV | 8 | 7 |
| 8th | 1974 | Arthur Bisguier**, Norman Weinstein, Eduardo Celorio | 296 | Mar 17-22 | Stardust, Las Vegas, NV | 8 | 7 |
| 9th | 1975 | Pal Benko**, Walter Browne, Alfonso Ferriz, Alex Suhobeck | 242 | Mar 2-7 | Stardust, Las Vegas, NV | 8 | 7 |
| 10th | 1976 | Anthony Miles**, Edward Formanek | 202 | Feb 29-Mar 6 | Stardust, Las Vegas, NV | 8 | 7 |
| 11th | 1977 | Jaime Sunye Neto** | 160 | Mar 12-16 | Univ of South Alabama, Mobile, AL | 7 | 6.5 |
| 12th | 1978 | Arthur Bisguier** | 167 | Mar 19-23 | Francis Marion Hotel, Charleston, SC | 7 | 6.5 |
| 1979 | Not held | ||||||
| 13th | 1980 | Calvin Blocker** | ? | Oct 17-19 | Chicago Palmer House Hotel, Chicago, IL | 5 | 5 |
| 1981 | Not held | ||||||
| 14th | 1982 | Sergey Kudrin**, Paul Kuroda | 338 | May 29-31 | Fort Worth Hilton, Fort Worth, TX | 6 | 6 |
| 15th | 1983 | Leonid Bass* | 400+ | Mar 11-13 | MGM Grand, Las Vegas, NV | 6 | 6 |
| 16th | 1984 | Walter Browne*, Arthur Bisguier, Lubomir Kavalek, David Strauss, Luismar Brito, James Banks | 501 | Mar 23-25 | MGM Grand, Las Vegas, NV | 6 | 5.5 |
| 17th | 1985 | Dmitry Gurevich*, Yehuda Gruenfeld, Igor Ivanov, Kamran Shirazi, Kevin Burnett | 654 | Mar 15-17 | Imperial Palace Hotel, Las Vegas, NV | 6 | 5.5 |
| 18th | 1986 | Dmitry Gurevich*, Joseph Bradford, Sergey Kudrin, Walter Browne | 726 | Mar 14-16 | Imperial Palace Hotel, Las Vegas, NV | 6 | 5.5 |
| 19th | 1987 | Maxim Dlugy*, Joel Benjamin, Walter Browne, Sergey Kudrin, Cyrus Lakdawala | 948 | Mar 13-15 | Imperial Palace Hotel, Las Vegas, NV | 6 | 5.5 |
| 20th | 1988 | Michael Brooks*, Sergey Kudrin, Mikhail Tal, James Rizzitano, Calvin Blocker, Leonid Shamkovich | 700 | Mar 18-20 | Chicago Holiday Inn O’Hare, Rosemont, IL | 6 | 5.5 |
| 21st | 1989 | Michael Rohde*, Victor Frias, Maxim Dlugy, Sergey Kudrin, Eugene Meyer, Alexander Ivanov, Larry Christiansen | 945 | Jun 9-11 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 22nd | 1990 | Dmitry Gurevich*, Sergey Kudrin, Gregory Kaidanov, Alexander Ivanov, Igor Ivanov, Jeremy Silman, Gata Kamsky | 1113 | Jun 8-10 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 23rd | 1991 | Walter Browne*, Alex Yermolinsky, Alexander Ivanov, Alex Fishbein, Dmitry Gurevich | 640 | May 31-Jun 2 | Ramada O’Hare Resort Hotel, Chicago, IL | 6 | 5.5 |
| 24th | 1992 | John Fedorowicz*, Gregory Kaidanov, Igor Ivanov, Ilya Gurevich, Joseph Bradford | 865 | Jun 5-7 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 25th | 1993 | Gata Kamsky*, Sergey Kudrin, Alex Yermolinsky, Maxim Dlugy | 931 | Jun 11-13 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 26th | 1994 | Walter Browne*, Gregory Kaidanov, Vladimir Akopian, Jaan Ehlvest, Ali Mortazavi | 833 | Apr 29-May 1 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 27th | 1995 | Julian Hodgson*, Walter Browne, Tal Shaked | 826 | May 5-7 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 28th | 1996 | Alexander Ivanov*, Dmitry Gurevich, Enrico Sevillano, Pavel Blatny | 840 | Apr 26-28 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 29th | 1997 | Dmitry Gurevich*, Ilya Smirin, Alexander Baburin, Julian Hodgson | 926 | Apr 11-13 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 30th | 1998 | Julian Hodgson*, Pavel Blatny, Jaan Ehlvest, Vladimir Eipishin, Evgeny Pigusov | 1106 | Mar 27-29 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 31st | 1999 | Jaan Ehlvest*, Ilya Smirin, Gregory Kaidanov | 981 | Mar 19-21 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 32nd | 2000 | Jaan Ehlvest*, Alex Yermolinsky, Gregory Kaidanov, Alexander Goldin, Alexander Baburin, Gregory Serper, Dmitry Gurevich, Pavel Blatny, Alexander Stripunsky, Yury Shulman, Levon Altounian, Eduard Gufeld, Rade Milovanovic | 886 | Mar 17-19 | Riviera, Las Vegas, NV | 6 | 5 |
| 33rd | 2001 | Vladimir Akopian*, Zhang Zhong | 859 | Mar 9-11 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 34th | 2002 | Alex Yermolinsky*, Walter Browne | 695 | Mar 8-10 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 35th | 2003 | Aleks Wojtkiewicz*, Sergey Kudrin, Petr Kiriakov, Gregory Serper, Hikaru Nakamura, Alex Shabalov, Ildar Ibragimov, Jaan Ehlvest | 822 | Jun 13-15 | Riviera, Las Vegas, NV | 6 | 5 |
| 36th | 2004 | Alex Yermolinsky*, Evgeny Najer, Varuzhan Akobian, Jaan Ehlvest, Daniel Fridman | 737 | Jun 18-20 | Riviera, Las Vegas, NV | 6 | 5 |
| 37th | 2005 | Dimitry Gurevich*, Dashzeveg Sharavdorj, Nick de Firmian, Ben Finegold | 630 | Jun 10-12 | Riviera, Las Vegas, NV | 6 | 5 |
| 38th | 2006 | Aleks Wojtkiewicz*, Lubomir Ftacnik, Varuzhan Adobian, Nikola Mitkov, Merab Gagunashvili | 696 | Jun 16-18 | Riviera, Las Vegas, NV | 6 | 5 |
| 39th | 2007 | Hikaru Nakamura* | 695 | Jun 8-10 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 40th | 2008 | Gata Kamsky*, Laurent Fressinet, Tigran L. Petrosian, Atanas Kolev, Ben Finegold, Josh Friedel | 720 | Jun 6-8 | Riviera, Las Vegas, NV | 6 | 5 |
| 41st | 2009 | Varuzhan Akobian*, Enrico Sevillano | 672 | Jun 5-7 | South Point Hotel, Las Vegas, NV | 6 | 5 |
| 42nd | 2010 | Timur Gareyev* | 693 | Jun 11-13 | South Point Hotel, Las Vegas, NV | 6 | 5.5 |
| 43rd | 2011 | Varuzhan Akobian*, Loek Van Wely | 614 | Jun 10-12 | South Point Hotel, Las Vegas, NV | 6 | 5 |
| 44th | 2012 | Alex Lenderman* | 652 | Jun 15-17 | Riviera, Las Vegas, NV | 6 | 5.5 |
| 45th | 2013 | Wesley So*, Varuzhan Akobian, Jaan Ehlvest, Manuel Leon Hoyos, Alejandro Ramirez, Enrico Sevillano | 619 | Jun 7-9 | Riviera, Las Vegas, NV | 6 | 5 |
| 46th | 2014 | Gata Kamsky* | 609 | Jun 13-15 | Riviera, Las Vegas, NV | 6 | 5 |
| 47th | 2015 | Aleksey Dreev*, Gata Kamsky, Illia Nyzhnyk, Axel Bachmann | 561 | Jun 19-21 | Westgate, Las Vegas, NV | 6 | 5 |
| 48th | 2016 | Ruifeng Li*, Daniel Fridman | 614 | Jun 24-26 | Westgate, Las Vegas, NV | 6 | 5 |
| 49th | 2017 | Tigran L. Petrosian* | 621 | Jun 16-18 | Westgate, Las Vegas, NV | 6 | 5 |
| 50th | 2018 | Cristian Chirila* | 722 | Jun 21-24 | Westgate, Las Vegas, NV | 7 | 6 |
| 51st | 2019 | Illia Nyzhnyk* | 728 | Jun 12-16 | Westgate, Las Vegas, NV | 9/7 | 7 |
| 52nd | 2020 | Dariusz Swiercz*, Timur Gareyev, D Gukesh | 343 | Nov 21-22 | Internet Chess Club (Online event) | 6 | 4.5 |
| 53rd | 2021 | Arthur Guo*, Illia Nyzhnyk, Andrew Hong, Emilio Cordova Daza, Lazaro Bruzon Batista | 1105 | Jun 16-20 | Westgate, Las Vegas, NV | 9/7 | 7 |
| 54th | 2022 | Semen Khanin* | 910 | Jun 8-12 | Westgate, Las Vegas, NV | 9/7 | 7.5 |
| 55th | 2023 | Illia Nyzhnyk*, Vasif Durarbayli, Yaser Quesada, Mikhail Antipov | 1212 | Jun 14-18 | Rio, Las Vegas, NV | 9/7 | 7 |
| 56th | 2024 | Vasif Durarbayli* | 1087 | Jun 5-9 | Flamingo, Las Vegas, NV | 9/7 | 7.5 |
| 57th | 2025 | Jun 4-8 |
