Doris Hart (June 20, 1925 – May 29, 2015) was an American tennis player who was active in the 1940s and first half of the 1950s. She was ranked world No. 1 in 1951. She was the fourth player, and second woman, to win a Career Grand Slam in singles. She was the first of only three players (all women) to complete the career "Boxed Set" of Grand Slam titles, which is winning at least one title in singles, doubles, and mixed doubles at all four Grand Slam events. Only she and Margaret Court achieved this during the amateur era of the sport.

Hart played collegiate tennis for the Miami Hurricanes at the University of Miami in Coral Gables, Florida.

Tennis career Hart reached 67 Grand Slam finals and won 35 titles, tying with Louise Brough for sixth on the all-time list (behind Margaret Smith Court (64), Martina Navratilova (59), Billie Jean King (39), Serena Williams (39), and Margaret Osborne duPont (37)). Six of her titles were in women's singles, 14 in women's doubles, and 15 in mixed doubles. Hart is one of only three players, all women, to have a "boxed set" of Grand Slam titles — every possible title (singles, women's doubles, and mixed doubles) from all four Grand Slam tournaments. The others are Margaret Smith Court and Martina Navratilova. Hart was the first person to accomplish this feat.

As a child, Hart suffered from osteomyelitis, which resulted in a permanently impaired right leg. She started playing tennis when she was 10 years old, greatly encouraged by her brother Bud.

After losing seven Grand Slam finals from 1942 through 1946, Hart won her first Grand Slam title at the 1947 Wimbledon Championships in women's doubles. At that point, she was still a student at the University of Miami.

Her first Grand Slam singles title came at the 1949 Australian National Championships, where she was the only non-Australian player in the draw. She also won singles titles at the 1950 and 1952 French International Championships, the 1951 Wimbledon Championships (routing doubles partner Shirley Fry in the final), and the 1954 and 1955 U.S. National Championships. The 1955 U.S. singles final was the last Grand Slam singles match of her career.

Hart won the singles, women's doubles, and mixed doubles titles at the 1951 Wimbledon Championships, playing the finals of all three events on the same day (July 7, 1951). She also won the "triple crown" at the 1952 French International Championships and the 1954 U.S. National Championships.

During her Wightman Cup career from 1946 through 1955, Hart was a perfect 14–0 in singles matches and 8–1 in doubles matches.

Hart did not lose a Grand Slam women's doubles match from the 1951 French International Championships through the semifinals of the 1954 Wimbledon Championships, 43 matches in total, although she skipped 4 Grand Slam tournaments during this period. She also did not lose a mixed doubles match at the 13 Grand Slam tournaments she played from the 1951 French International Championships through the 1955 U.S. National Championships. She (and partner Stan Smith) lost in the third round of the 1968 Wimbledon Championships to Frew McMillan and Annette Van Zyl Du Plooy 6–3, 12–10.

According to John Olliff and Lance Tingay of The Daily Telegraph and the Daily Mail, Hart was ranked in the world top 10 from 1946 through 1955 (no rankings issued from 1940 through 1945), reaching a career high of world No. 1 in those rankings in 1951. Hart was included in the year-end top 10 rankings issued by the United States Lawn Tennis Association from 1942 through 1955. She was the top ranked U.S. player in 1954 and 1955.

Hart retired from the tour in late 1955 to become a tennis teaching professional. Her autobiography Tennis with Hart was published that year. Following her retirement, that same year she joined the United States Professional Tennis Association (USPTA), now Racquet Sports Professionals Association (RSPA). With USPTA she become certified as a tennis teaching professional and in 2012 was the first women inducted into USPTA's Hall of fame.

She was inducted into the inaugural Class of 1967 inductees to the University of Miami Sports Hall of Fame and inducted into the International Tennis Hall of Fame in 1969.

She died on May 29, 2015, at her home in Coral Gables, Florida, at age 89.

Grand Slam finals Singles (6 titles, 12 runners-up) ResultYearChampionshipSurfaceOpponentScoreLoss 1946 U.S. National Championships Grass Pauline Betz 9–11, 3–6Loss 1947 Wimbledon Grass Margaret Osborne duPont 2–6, 4–6Loss 1947 French Championships Clay Patricia Canning Todd 3–6, 6–3, 4–6Loss 1948 Wimbledon Grass Louise Brough 3–6, 6–8Win 1949 Australian Championships Grass Nancye Wynne Bolton 6–3, 6–4Loss 1949 U.S. National Championships Grass Margaret Osborne duPont 3–6, 1–6Loss 1950 Australian Championships Grass Louise Brough 4–6, 6–3, 4–6Win 1950 French Championships Clay Patricia Canning Todd 6–4, 4–6, 6–2Loss 1950 U.S. National Championships Grass Margaret Osborne duPont 4–6, 3–6Loss 1951 French Championships Clay Shirley Fry 3–6, 6–3, 3–6Win 1951 Wimbledon Grass Shirley Fry 6–1, 6–0Win 1952 French Championships Clay Shirley Fry 6–4, 6–4Loss 1952 U.S. National Championships Grass Maureen Connolly 3–6, 5–7Loss 1953 French Championships Clay Maureen Connolly 2–6, 4–6Loss 1953 Wimbledon Grass Maureen Connolly 6–8, 5–7Loss 1953 U.S. National Championships Grass Maureen Connolly 2–6, 4–6Win 1954 U.S. National Championships Grass Louise Brough 6–8, 6–1, 8–6Win 1955 U.S. National Championships Grass Patricia Ward 6–4, 6–2

Doubles (14 titles, 16 runners-up) ResultYearChampionshipSurfacePartnerOpponentsScoreLoss 1942 U.S. National Championships Grass Pauline Betz Louise Brough Margaret Osborne duPont 6–2, 5–7, 0–6Loss 1943 U.S. National Championships Grass Pauline Betz Louise Brough Margaret Osborne duPont 4–6, 3–6Loss 1944 U.S. National Championships Grass Pauline Betz Louise Brough Margaret Osborne duPont 6–4, 4–6, 3–6Loss 1945 U.S. National Championships Grass Pauline Betz Louise Brough Margaret Osborne duPont 3–6, 3–6Loss 1946 Wimbledon Grass Pauline Betz Louise Brough Margaret Osborne duPont 3–6, 6–2, 3–6Loss 1946 French Championships Clay Pauline Betz Louise Brough Margaret Osborne duPont 4–6, 6–0, 1–6Win 1947 Wimbledon Grass Patricia Canning Todd Louise Brough Margaret Osborne duPont 3–6, 6–4, 7–5Loss 1947 French Championships Clay Patricia Canning Todd Louise Brough Margaret Osborne duPont 5–7, 2–6Loss 1947 U.S. National Championships Grass Patricia Canning Todd Louise Brough Margaret Osborne duPont 7–5, 3–6, 5–7Win 1948 French Championships Clay Patricia Canning Todd Mary Arnold Prentiss Shirley Fry 6–4, 6–2Loss 1948 Wimbledon Grass Patricia Canning Todd Louise Brough Margaret Osborne duPont 1–6, 1–6Loss 1948 U.S. National Championships Grass Patricia Canning Todd Louise Brough Margaret Osborne duPont 4–6, 10–8, 1–6Loss 1949 Australian Championships Grass Marie Toomey Nancye Wynne Bolton Thelma Coyne Long 0–6, 1–6Loss 1949 U.S. National Championships Grass Shirley Fry Louise Brough Margaret Osborne duPont 4–6, 8–10Win 1950 Australian Championships Grass Louise Brough Nancye Wynne Bolton Thelma Coyne Long 6–3, 2–6, 6–3Win 1950 French Championships Clay Shirley Fry Louise Brough Margaret Osborne duPont 1–6, 7–5, 6–2Loss 1950 Wimbledon Grass Shirley Fry Louise Brough Margaret Osborne duPont 4–6, 7–5, 1–6Loss 1950 U.S. National Championships Grass Shirley Fry Louise Brough Margaret Osborne duPont 2–6, 3–6Win 1951 French Championships Clay Shirley Fry Beryl Bartlett Barbara Scofield 10–8, 6–3Win 1951 Wimbledon Grass Shirley Fry Louise Brough Margaret Osborne duPont 6–2, 13–11Win 1951 U.S. National Championships Grass Shirley Fry Nancy Chaffee Patricia Canning Todd 6–4, 6–2Win 1952 French Championships Clay Shirley Fry Hazel Redick-Smith Julia Wipplinger 7–5, 6–1Win 1952 Wimbledon Grass Shirley Fry Louise Brough Maureen Connolly 8–6, 6–3Win 1952 U.S. National Championships Grass Shirley Fry Louise Brough Maureen Connolly 10–8, 6–4Win 1953 French Championships Clay Shirley Fry Maureen Connolly Julia Sampson 6–4, 6–3Win 1953 Wimbledon Grass Shirley Fry Maureen Connolly Julia Sampson 6–0, 6–0Win 1953 U.S. National Championships Grass Shirley Fry Louise Brough Margaret Osborne duPont 6–2, 7–9, 9–7Loss 1954 Wimbledon Grass Shirley Fry Louise Brough Margaret Osborne duPont 6–4, 7–9, 1–6Win 1954 U.S. National Championships Grass Shirley Fry Louise Brough Margaret Osborne duPont 6–4, 6–4Loss 1955 U.S. National Championships Grass Shirley Fry Louise Brough Margaret Osborne duPont 3–6, 6–1, 3–6

Mixed doubles: 19 (15 titles, 4 runners-up) ResultYearChampionshipSurfacePartnerOpponentsScoreLoss 1945 U.S. Championships Grass Bob Falkenburg Margaret Osborne duPont Bill Talbert 4–6, 4–6Loss 1948 French Championships Clay Frank Sedgman Pat Canning Todd Jaroslav Drobný 3–6, 6–3, 3–6Loss 1948 Wimbledon Grass Frank Sedgman Louise Brough John Bromwich 2–6, 6–3, 3–6Win 1949 Australian Championships Grass Frank Sedgman Joyce Fitch John Bromwich 6–1, 5–7, 12–10Win 1950 Australian Championships Grass Frank Sedgman Joyce Fitch Eric Sturgess 8–6, 6–4Loss 1950 U.S. Championships Grass Frank Sedgman Margaret Osborne duPont Ken McGregor 4–6, 6–3, 3–6Win 1951 French Championships Clay Frank Sedgman Thelma Coyne Long Mervyn Rose 7–5, 6–2Win 1951 Wimbledon Grass Frank Sedgman Nancye Wynne Bolton Mervyn Rose 7–5, 6–2Win 1951 U.S. Championships Grass Frank Sedgman Shirley Fry Mervyn Rose 6–3, 6–2Win 1952 Wimbledon Grass Frank Sedgman Thelma Coyne Long Enrique Morea 4–6, 6–3, 6–4Win 1952 French Championships Clay Frank Sedgman Shirley Fry Eric Sturgess 6–8, 6–3, 6–3Win 1952 U.S. Championships Grass Frank Sedgman Thelma Long Lew Hoad 6–3, 7–5Win 1953 French Championships Clay Vic Seixas Maureen Connolly Mervyn Rose 4–6, 6–4, 6–0Win 1953 Wimbledon Grass Vic Seixas Shirley Fry Enrique Morea 9–7, 7–5Win 1953 U.S. Championships Grass Vic Seixas Julia Sampson Rex Hartwig 6–2, 4–6, 6–4Win 1954 Wimbledon Grass Vic Seixas Margaret duPont Ken Rosewall 5–7, 6–4, 6–3Win 1955 Wimbledon Grass Vic Seixas Louise Brough Enrique Morea 8–6, 2–6, 6–3Win 1954 U.S. Championships Grass Vic Seixas Margaret duPont Ken Rosewall 4–6, 6–1, 6–1Win 1955 U.S. Championships Grass Vic Seixas Shirley Fry Gardnar Mulloy 7–5, 5–7, 6–2

Grand Slam performance timelines

Singles Tournament 1940 1941 1942 1943 1944 1945 19461 19471 1948 1949 1950 1951 1952 1953 1954 1955 Career SR Win–loss Australian ChampionshipsANHNHNHNHNHAAA W FAAAAA 1 / 2 8-1 French ChampionshipsNH R R R RAQF F SFA W F W FAA 2 / 7 28-5 Wimbledon ChampionshipsNHNHNHNHNHNHQF F FA SF WQF F SF SF 1 / 9 43-8 U.S. National Championships2R21RQF SFQF SF F SFQF F F SF F F W W 2 / 16 57-13 SR0 / 10 / 10 / 10 / 10 / 10 / 10 / 30 / 30 / 31 / 21 / 41 / 31 / 30 / 31 / 21 / 2 6 / 34 Win–loss0-00-13-13-12-13-110-314-311-39-120-315-213-214-310-19-1 136-27

Doubles Tournament 1942 1943 1944 1945 19461 19471 1948 1949 1950 1951 1952 1953 1954 1955 1956– 1967 1968 1969 Career SR Australian ChampionshipsNHNHNHNHAAA F WAAAAAAAA 1 / 2 French ChampionshipsRRRA F F WA W W W WAAAAA 5 / 7 Wimbledon Championships NH NH NH NH F W FA F W W W F 2RA 2RA 4 / 10 U.S. National Championships F F F F SF F F F F W W W W FAA1R 4 / 15 SR0 / 10 / 10 / 10 / 10 / 31 / 31 / 30 / 22 / 43 / 33 / 33 / 31 / 20 / 20 / 00 / 10 / 1 14 / 34

Mixed doubles Tournament 1942 1943 1944 1945 19461 19471 1948 1949 1950 1951 1952 1953 1954 1955 1956–1967 1968 1969 Career SR Australian ChampionshipsNHNHNHNHAAA W WAAAAAAAA 2 / 2 French ChampionshipsRRRA 2RA FA 3R W W WAAAAA 3 / 6 Wimbledon Championships NH NH NH NH4R SF FA SF W W W W WA3RA 5 / 10 U.S. National Championships2R1RQF FQF1R SFQF F W W W W WAAQF 5 / 15 SR0 / 10 / 10 / 10 / 10 / 30 / 20 / 31 / 21 / 43 / 33 / 33 / 32 / 22 / 20 / 00 / 10 / 1 15 / 33

R = tournament restricted to French nationals and held under German occupation. 1In 1946 and 1947, the French Championships were held after Wimbledon.