Washington
| Year | Period | Type | Winner |
|---|---|---|---|
| 2016 | 19 Jul - 19 Jul | ATP | Gael Monfils |
| 2016 | 18 Jul - 18 Jul | WTA | Yanina Wickmayer |
| 2015 | 03 Aug - 09 Aug | ATP | Kei Nishikori |
| 2015 | 03 Aug - 09 Aug | WTA | Sloane Stephens |
| 2014 | 28 Jul - 03 Aug | ATP | Milos Raonic |
| 2014 | 28 Jul - 03 Aug | WTA | Svetlana Kuznetsova |
| 2013 | 29 Jul - 04 Aug | ATP | Juan Martin Del Potro |
| 2013 | 29 Jul - 04 Aug | WTA | Magdalena Rybarikova |
| 2012 | 30 Jul - 05 Aug | ATP | Alexandr Dolgopolov |
| 2012 | 29 Jul - 05 Aug | WTA | Magdalena Rybarikova |
| 2011 | 01 Aug - 07 Aug | ATP | Radek Stepanek |
| 2011 | 25 Jul - 31 Jul | WTA | Nadia Petrova |
| 2010 | 31 Jul - 01 Aug | ATP | David Nalbandian |
| 2009 | 03 Aug - 09 Aug | ATP | Juan Martin Del Potro |
| 2008 | 11 Aug - 17 Aug | ATP | Juan Martin Del Potro |
| 2007 | 29 Jul - 05 Aug | ATP | Andy Roddick |
| 2006 | 31 Jul - 07 Aug | ATP | Arnaud Clement |
| 2005 | 01 Aug - 08 Aug | ATP | Andy Roddick |
| 2004 | 16 Aug - 23 Aug | ATP | Lleyton Hewitt |
| 2003 | 28 Jul - 04 Aug | ATP | Tim Henman |
| 2002 | 12 Aug - 19 Aug | ATP | James Blake |
| 2001 | 13 Aug - 20 Aug | ATP | Andy Roddick |
| 2000 | 14 Aug - 21 Aug | ATP | Alex Corretja |
| 1999 | 16 Aug - 23 Aug | ATP | Andre Agassi |
| 1998 | 20 Jul - 27 Jul | ATP | Andre Agassi |
| 1997 | 14 Jul - 21 Jul | ATP | Michael Chang |
| 1996 | 15 Jul - 22 Jul | ATP | Michael Chang |
| 1995 | 17 Jul - 24 Jul | ATP | Andre Agassi |
| 1994 | 18 Jul - 25 Jul | ATP | Stefan Edberg |
| 1993 | 19 Jul - 26 Jul | ATP | Amos Mansdorf |
| 1992 | 13 Jul - 20 Jul | ATP | Petr Korda |
| 1991 | 15 Jul - 22 Jul | ATP | Andre Agassi |
| 1990 | 16 Jul - 23 Jul | ATP | Andre Agassi |
| 1989 | 24 Jul - 31 Jul | ATP | Tim Mayotte |
| 1988 | 18 Jul - 25 Jul | ATP | Jimmy Connors |
| 1987 | 27 Jul - 03 Aug | ATP | Ivan Lendl |
| 1986 | 28 Jul - 04 Aug | ATP | Karel Novacek |
| 1985 | 15 Jul - 22 Jul | ATP | Yannick Noah |
| 1984 | 23 Jul - 30 Jul | ATP | Andres Gomez |
| 1983 | 18 Jul - 31 Oct | ATP | Jose-Luis Clerc |
| 1982 | 19 Jul - 13 Sep | ATP | Ivan Lendl |
| 1981 | 20 Jul - 03 Aug | ATP | Jose-Luis Clerc |
| 1980 | 21 Jul - 11 Aug | ATP | Brian Gottfried |
| 1979 | 14 Jul - 09 Jul | ATP | Guillermo Vilas |
| 1978 | 23 Jul - 12 Jul | ATP | Jimmy Connors |
| 1977 | 18 Jul - 18 Jul | ATP | Guillermo Vilas |
| 1976 | 26 Jul - 14 Jun | ATP | Jimmy Connors |
| 1975 | 21 Jul - 21 Jul | ATP | Guillermo Vilas |
| 1975 | 15 Mar - 15 Dec | ATP | Harold Solomon |
| 1974 | 17 Mar - 17 Mar | ATP | Ilie Nastase |
| 1974 | 07 Apr - 07 Apr | ATP | Vijay Amritraj |
| 1974 | 23 Jul - 23 Jul | ATP | Harold Solomon |
| 1973 | 19 Mar - 19 Mar | ATP | Tom Okker |
| 1973 | 23 Jul - 23 Jul | ATP | Arthur Ashe |
| 1972 | 12 Mar - 12 Mar | ATP | Stan Smith |
| 1972 | 12 Jul - 12 Jul | ATP | Tony Roche |
| 1971 | 17 Jul - 17 Jul | ATP | Ken Rosewall |
| 1970 | 18 Jul - 18 Jul | ATP | Cliff Richey |