Junior success

Lučić began playing tennis at age 4 by hiding in the car when her older sister went to tennis classes and then sneaking into the lessons herself. As a junior player, she won the girls' singles title at the US Open in 1996, and singles and doubles crowns at the Australian Open in 1997, becoming the third player in the Open Era to win two junior Grand Slam singles titles before her 15th birthday (others being Martina Hingis and Jennifer Capriati).

1997–98: Grand Slam title

Lučić turned professional in April 1997 at the age of 15. One week after turning pro, she won the first WTA Tour event she played in at Bol. She then reached the final of her second career event in Strasbourg, where she lost to Steffi Graf.

In 1998, playing in her first tour doubles event, Lučić became the youngest player in history to win a title at the Australian Open at the age of 15 years, 10 months and 21 days, when she and Hingis won the women's doubles title. The win made Lučić the first player to win both the first singles and doubles events they had ever played in on the WTA Tour. She went on to win the second doubles event of her career when she partnered with Hingis to win the Pan Pacific Open in Tokyo. Later that year, Lučić defended her singles title at Bol, becoming the youngest player ever to defend a tour title at age 16 years, one month and 24 days. Partnering with Mahesh Bhupathi, she also finished runner-up in the 1998 mixed-doubles event of Wimbledon.

1999: Wimbledon semifinal, personal problems

In 1999, Lučić achieved her career-best Grand Slam singles performance when she reached the semifinals at Wimbledon, before losing in three sets to Graf. She beat Erika deLone and Mariana Díaz Oliva before she beat world No. 4 and nine-time Grand Slam champion Monica Seles in the third round. She saw off Tamarine Tanasugarn and then beat 1998 Wimbledon finalist Nathalie Tauziat in the quarterfinals, after Tauziat served for the match twice in the third set.

After 1999, Lučić suffered a series of personal and financial problems and failed to make any further significant impact on the tour. She said that she had been abused by her father, Marinko, from early childhood.^{[8][9][10][11]} She continued to compete until the 2003 US Open, then proceeded to take an extended hiatus from competition; her career-high rankings were world No. 32 in singles and No. 19 in doubles (both achieved in 1998). She played only two tournaments in the 2004, 2005, and 2006 seasons combined.

2007–08: Return to tour

Lučić gave an interview in the New York Daily News in April 2006, explaining why she stopped playing and describing her life with an abusive father, vowing that would not stop her and she would continue to fight to the end. She had been training with a new coach, Ivan Beroš, and said she was fit and ready to continue tennis.^[12]

As a wildcard in the qualifying draw of the Cellular South Cup in Memphis in February, Lučić won one match (defeating Melanie Oudin) before losing in the second round to Natalie Grandin. She was also awarded a wildcard to the Indian Wells Open in March, where she again won her first match before losing in the second round.^[13]

She also received a wildcard to the Tiro A Volo tournament in Rome, where she lost in the first round to Karin Knapp. That was her third tournament within the previous 12 months, and she received her first WTA ranking (No. 524) since her return to the professional tour.

Even though she lost the first round to Knapp in the $100k Rome Challenger, she received a qualifying wildcard for the WTA Tour tournament in May at the same city and beat the 65th-ranked player in the world, Elena Vesnina. She then went on to lose to Catalina Castaño in the second round. Her ranking fell to 444 with the result.

Lučić played a mixture of ITF and WTA qualifiers in 2008, her best result reaching the quarterfinals in Florence in May. In September 2008, Mirjana started working with her new coach Alberto Gutierrez, planning to play a full schedule the following year.

2009–11

In the 2009 season, she was given a wildcard into the Auckland Open in New Zealand. In her first WTA Tour main-draw match since 2007 Indian Wells, she lost to Anne Keothavong in the first round.

Lučić then continued to toil on the ITF Circuit for several years prior to mounting somewhat of a comeback in the 2010 season. During that year, Lučić won her first title in 12 years at a $25k event in Jackson, Florida on 11 April. Shortly after, Lučić qualified for the WTA event in Birmingham, going on to win her first main-draw match since 2007 in Indian Wells, this time over Colombian Mariana Duque. She continued her good form as she defeated fellow Croatian player Karolina Šprem in the second round. She was beaten by top-20 player Aravane Rezaï of France in the third round. Lučić then competed in the Wimbledon qualifying tournament in Roehampton. She won her first two rounds and beat Michaëlla Krajicek in the third round to qualify for the main draw of Wimbledon, her first Grand Slam since the 2002 US Open. After a good showing, she fell to 14th seed Victoria Azarenka in the first round on centre court.

After Wimbledon, Lučić moved onto the European summer clay-court events. She failed to qualify for the Swedish Open in Båstad but the following week came through three rounds of qualifying at Palermo event, and won her first round match, defeating Pauline Parmentier recovering from a 0–4 third set deficit and saving three match points. She then fell to third seed Sara Errani in the second round recovering a 2–4 deficit to force a tie-break before falling 0–6, 6–7. Her ranking rose to No. 151.

Following Palermo, Lučić returned to the United States for the summer hard-court season. Her first event was the Premier event in Stanford, the Silicon Valley Classic. Seeded fifth in the qualifying draw, Lučić defeated both Heidi El Tabakh and Tamaryn Hendler in straight sets, before repeating her Wimbledon victory over Michaëlla Krajicek with a straight-sets win to qualify for the main draw where she lost to Maria Kirilenko.

In the US Open, after winning three qualifying matches to enter the main draw, she beat Alicia Molik to set up a second round clash with No. 4 seed Jelena Janković. Lučić lost in three sets. Even with this defeat, this was her best performance in a Grand Slam championship for nearly a decade.

Lučić started out the 2011 season poorly with a string of early losses on both the WTA Tour and ITF Circuit early in the year. Her fortunes began to change during the clay court season where Lučić reached her first WTA quarterfinal in over ten years at the Strasbourg event, losing to Anabel Medina Garrigues. She married restaurateur Daniele Baroni in December 2011.^[14]

2012

Lučić-Baroni began the new season losing in qualifying at Brisbane and Sydney in January. She also failed to qualify for the Australian Open. She struggled to find her form, losing early at the tournaments in Midland and Memphis, as well as the Premier line-up events of Indian Wells, Miami and Charleston. She also lost in the first round at Roland Garros to Svetlana Kuznetsova.

Lučić-Baroni had a breakthrough run at Wimbledon, reaching the third round as a qualifier. She stunned ninth seed Marion Bartoli en route to the second round. However, her run was ended by Roberta Vinci in a tight match.

2014: US Open fourth round, first titles in 16 years

At the Wimbledon Championships, Lučić-Baroni faced former No. 1 Victoria Azarenka in the first round but lost to the Belarusian in straight sets, after having set points in the second set.^[15]

A few weeks later, a resurgent Lučić-Baroni made major waves at the US Open. She defeated No. 25 seed Garbiñe Muguruza in the first round, and Shahar Pe'er in the second round to gain a berth in the third round for the first time since 1998.^[16] She then pulled off a huge upset, stunning second-seed Simona Halep in straight sets to win a spot in the round of 16—the best result of her career at this tournament, and her best showing at a Grand Slam since reaching the semifinals at Wimbledon in 1999.^[17] She went on to lose this round to 13th seed Sara Errani in three sets.

However, only two weeks later, she entered the Quebec City event and reached the singles final, where she pulled off another major upset by beating Venus Williams on 14 September, setting a record for the longest gap between titles in WTA history, as her previous win happened 16 years and four months earlier at the 1998 Bol Ladies Open.^[18] In addition, paired with Czech player Lucie Hradecká, she won the doubles final of the tournament on the same day.

2015–16

Lučić-Baroni at the 2015 Wimbledon Championships

In 2015, Lučić-Baroni had a second consecutive finish in the top 100 of the WTA rankings, ending the season ranked No. 67. Her best performance was reaching the semifinals of Quebec City.

In 2016, she reached the final of the Strasbourg event, where she lost in straight sets to Caroline Garcia.

2017: Return to a major semifinal and career-high ranking

Mirjana entered the Australian Open ranked 79 in the world. In the first round, she beat Wang Qiang in three sets to advance into the second round where she upset the third-seed Agnieszka Radwańska in straight sets. In the third round she defeated Maria Sakkari in three sets. In the fourth round, she defeated qualifier Jennifer Brady in straight sets to advance to the quarterfinals where she pulled another major upset, beating Karolína Plíšková, a heavy favorite to win the tournament in three tight sets where she made her first Australian Open semifinals and her first semifinal appearance since she did so in the 1999 Wimbledon Championships 18 years ago. She then proceeded to lose in two sets against six-time Australian Open champion and No. 2 seed Serena Williams. She reached her highest ranking of No. 29 on 30 January, eclipsing her previous best of No. 32 set in May 1998. On 1 May, she cracked the top 20 for the first time.

2018

At the Brisbane International, Lučić-Baroni lost in the second round to last year finalist Alizé Cornet.^[19]

2021: Comeback plans

In March 2021, Lučić-Baroni announced her continued plans for a comeback in order to conclude her career on her own terms.^[20]

Singles

Doubles

Women's doubles: 1 (title)

Result	Year	Tournament	Surface	Partner	Opponents	Score
Win	1998	Australian Open	Hard	Martina Hingis	Lindsay Davenport Natasha Zvereva	6–4, 2–6, 6–3

Mixed doubles: 1 (runner-up)

Result	Year	Championship	Surface	Partner	Opponents	Score
Loss	1998	Wimbledon	Grass	Mahesh Bhupathi	Serena Williams Max Mirnyi	4–6, 4–6

Singles: 5 (3 titles, 2 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	May 1997	Bol Open, Croatia	Tier IV	Clay	Corina Morariu	7–5, 6–7(4), 7–6(5)
Loss	1–1	May 1997	Internationaux de Strasbourg, France	Tier III	Clay	Steffi Graf	2–6, 5–7
Win	2–1	May 1998	Bol Open, Croatia	Tier IV	Clay	Corina Morariu	6–4, 6–2
Win	3–1	Sep 2014	Tournoi de Québec, Canada	International	Carpet (i)	Venus Williams	6–4, 6–3
Loss	3–2	May 2016	Internationaux de Strasbourg, France	International	Clay	Caroline Garcia	4–6, 1–6

Doubles: 4 (3 titles, 1 runner-up)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Feb 1998	Australian Open	Grand Slam	Hard	Martina Hingis	Lindsay Davenport Natasha Zvereva	6–4, 2–6, 6–3
Win	2–0	Feb 1998	Pan Pacific Open, Japan	Tier I	Carpet (i)	Martina Hingis	Lindsay Davenport Natasha Zvereva	7–5, 6–4
Loss	2–1	May 1998	Bol Open, Croatia	Tier IV	Clay	Joannette Kruger	Laura Montalvo Paola Suárez	w/o
Win	3–1	Sep 2014	Tournoi de Québec, Canada	International	Carpet (i)	Lucie Hradecká	Julia Görges Andrea Hlaváčková	6–3, 7–6(10–8)

Singles: 7 (4–3)

Outcome	No.	Date	Tournament	Surface	Opponent	Score
Runner-up	1.	15 December 1996	ITF Salzburg, Austria	Carpet (i)	Chanda Rubin	1–6, 2–6
Runner-up	2.	22 June 1997	ITF Marseille, France	Clay	Amelie Cocheteux	6–4, 5–7, 4–6
Winner	1.	3 August 1997	ITF Makarska, Croatia	Clay	Sandra Dopfer	6–1, 6–4
Runner-up	3.	1 November 2009	ITF Bayamón, Puerto Rico	Hard	Rossana de los Ríos	3–6, 4–6
Winner	2.	11 April 2010	ITF Jackson, United States	Clay	Jamie Hampton	7–5, 6–3
Winner	3.	26 September 2010	ITF Albuquerque, United States	Hard	Lindsay Lee-Waters	6–1, 6–4
Winner	4.	13 October 2013	ITF Joué-lès-Tours, France	Hard (i)	An-Sophie Mestach	6–4, 6–2

Doubles: 3 (3–0)

Outcome	No.	Date	Tournament	Surface	Partner	Opponents	Score
Winner	1.	15 December 1996	ITF Salzburg, Austria	Carpet (i)	Chanda Rubin	Adriana Barna Anca Barna	6–3, 6–2
Winner	2.	4 November 2012	ITF New Braunfels, United States	Hard	Elena Bovina	Mariana Duque Mariño Adriana Pérez	6–3, 4–6, [10–8]
Winner	3.	10 February 2013	Midland Classic, United States	Hard (i)	Melinda Czink	Maria Fernanda Alves Samantha Murray	5–7, 6–4, [10–7]

Record against top 10 players

Player	Record	Win%	Hard	Clay	Grass	Carpet	Last match
Number 1 ranked players
Simona Halep	2–0	100%	1–0	1–0	–	–	Won (7–5, 6–1) at 2015 French Open
Monica Seles	1–0	100%	–	–	1–0	–	Won (7–6(7–4), 7–6(7–4)) at 1999 Wimbledon
Ana Ivanovic	1–1	50%	–	1–0	0–1	–	Lost (3–6, 4–6) at 2011 Birmingham
Karolína Plíšková	3–4	43%	2–4	–	1–0	–	Lost (3–6, 4–6) at 2017 Miami
Garbiñe Muguruza	1–2	33%	1–1	–	0–1	–	Lost (6–1, 2–6, 1–6) at 2015 Beijing
Maria Sharapova	1–2	33%	–	1–2	–	–	Won (6–4, 3–6, 1–2, ret.) at 2017 Rome
Venus Williams	1–2	33%	0–2	–	–	1–0	Won (6–4, 6–3) at 2014 Quebec City
Victoria Azarenka	0–2	0%	–	–	0–2	–	Lost (3–6, 5–7) at 2014 Wimbledon
Jennifer Capriati	0–1	0%	–	0–1	–	–	Lost (3–6, 1–6) at 2001 French Open
Steffi Graf	0–3	0%	0–1	0–1	0–1	–	Lost (7–6(7–3), 4–6, 3–6) at 1999 Wimbledon
Martina Hingis	0–2	0%	0–1	0–1	–	–	Lost (1–6, 2–6) at 2000 Australian Open
Jelena Janković	0–1	0%	0–1	–	–	–	Lost (4–6, 6–3, 2–6) at 2010 US Open
Angelique Kerber	0–4	0%	0–4	–	–	–	Lost (2–6, 6–7(6–8)) at 2016 US Open
Naomi Osaka	0–1	0%	–	0–1	–	–	Lost (3–6, 3–6) at 2016 French Open
Serena Williams	0–3	0%	0–2	–	0–1	–	Lost (2–6, 1–6) at 2017 Australian Open
Caroline Wozniacki	0–2	0%	0–2	–	–	–	Lost (4–6, 4–6) at 2016 Monterrey
Number 2 ranked players
Anett Kontaveit	1–1	50%	1–0	0–1	–	–	Won (6–4, 6–7(3–7), 6–3) at 2017 New Haven
Agnieszka Radwańska	2–2	50%	2–1	–	0–1	–	Won (6–0, 6–3) at 2017 Miami
Svetlana Kuznetsova	0–1	0%	–	0–1	–	–	Lost (1–6, 3–6) at 2012 French Open
Petra Kvitová	0–1	0%	0–1	–	–	–	Lost (1–6, ret.) at 2018 Sydney
Li Na	0–1	0%	–	0–1	–	–	Lost (1–6, 2–6) at 2013 Stuttgart
Jana Novotná	0–1	0%	0–1	–	–	–	Lost (2–6, 7–6(7–3), 3–6) at 1997 US Open
Number 3 ranked players
Jessica Pegula	1–0	100%	1–0	–	–	–	Won (6–3, 6–7(2–7), 6–0) at 2013 Indian Wells Qualifying
Mary Pierce	1–0	100%	–	1–0	–	–	Won (7–5, 6–4) at 1998 Rome
Nathalie Tauziat	2–0	100%	–	1–0	1–0	–	Won (4–6, 6–4, 7–5) at 1999 Wimbledon
Maria Sakkari	1–1	50%	1–1	–	–	–	Won (3–6, 6–2, 6–3) at 2017 Australian Open
Amanda Coetzer	1–2	33%	0–2	1–0	–	–	Lost (6–4, 6–7(1–7), 2–6) at 1999 Toronto
Number 4 ranked players
Kimiko Date-Krumm	1–0	100%	1–0	–	–	–	Won (2–6, 6–3, 6–2) at 2014 Sydney Qualifying
Johanna Konta	1–0	100%	1–0	–	–	–	Won (4–6, 6–2, 7–5) at 2016 Acapulco
Kiki Bertens	1–1	50%	0–1	1–0	–	–	Won (7–6(7–5), 6–4) at 2017 Charleston
/ Jelena Dokic	1–1	50%	–	1–1	–	–	Won (6–2, 6–2) at 2011 Strasbourg
Samantha Stosur	1–1	50%	1–1	–	–	–	Won (6–2, 6–1) at 2015 Wuhan
Belinda Bencic	1–2	33%	1–1	–	0–1	–	Won (7–5, 6–4) at 2017 Acapulco
Dominika Cibulková	0–5	0%	0–2	0–1	0–2	–	Lost (5–7, 3–6) at 2016 Wimbledon
Caroline Garcia	0–5	0%	0–3	0–2	–	–	Lost (2–6, 4–6) at 2016 Wuhan
Anke Huber	0–1	0%	–	–	–	0–1	Lost (2–6, 2–6) at 1997 Fed Cup
Iva Majoli	0–1	0%	0–1	–	–	–	Lost (5–7, 4–6) at 1998 Australian Open
Francesca Schiavone	0–2	0%	0–1	0–1	–	–	Lost (1–6, 2–6) at 2012 Strasbourg
Number 5 ranked players
Daniela Hantuchová	1–0	100%	–	1–0	–	–	Won (6–1, 6–2) at 2016 French Open
Sara Errani	1–2	33%	1–1	0–1	–	–	Won (6–3, 6–4) at 2015 Luxembourg
Lucie Šafářová	1–4	20%	0–2	1–2	–	–	Won (7–5, 4–6, 6–3) at 2017 Rome
Anna Chakvetadze	0–1	0%	0–1	–	–	–	Lost (2–6, 5–7) at 2007 Indian Wells
Jeļena Ostapenko	0–2	0%	0–1	0–1	–	–	Lost (3–6, 7–5, 4–6) at 2017 Charleston
Number 6 ranked players
Chanda Rubin	0–1	0%	–	–	–	0–1	Lost (1–6, 2–6) at 1996 Salzburg
Carla Suárez Navarro	0–4	0%	0–3	–	0–1	–	Lost (6–4, 6–7(4–7), 2–6) at 2017 US Open
Number 7 ranked players
Marion Bartoli	1–0	100%	–	–	1–0	–	Won (6–4, 6–3) at 2012 Wimbledon
Patty Schnyder	1–1	50%	1–1	–	–	–	Won (6–3, 6–7(5–7), 6–3) at 1999 Toronto
Roberta Vinci	1–2	33%	0–1	–	1–1	–	Lost (3–6, 3–6) at 2015 Toronto
Madison Keys	0–4	0%	0–1	0–3	–	–	Lost (6–4, 6–7(3–7), 6–7(0–7)) at 2015 Strasbourg
Number 8 ranked players
Ekaterina Makarova	1–1	50%	–	1–0	0–1	–	Lost (1–6, 6–3, 4–6) at 2011 Eastbourne
Alicia Molik	1–1	50%	1–1	–	–	–	Won (7–6(7–5), 6–1) at 2010 US Open
Anna Kournikova	0–2	0%	0–2	–	–	–	Lost (4–6, 2–6) at 1999 Stanford
Number 9 ranked players
Julia Görges	1–0	100%	–	–	–	1–0	Won (6–4, 5–7, 6–2) at 2014 Quebec City
Brenda Schultz-McCarthy	1–0	100%	–	1–0	–	–	Won (6–1, 6–4) at 2007 Charleston Qualifying
Sandrine Testud	1–0	100%	–	1–0	–	–	Won (7–5, ret.) at 1998 Rome
Number 10 ranked players
Kristina Mladenovic	3–1	75%	–	3–1	–	–	Lost (4–6, 2–6) at 2017 Stuttgart
Karina Habšudová	0–1	0%	0–1	–	–	–	Lost (3–6, 6–7(3–7)) at 2001 Miami
Maria Kirilenko	0–1	0%	0–1	–	–	–	Lost (1–6, 4–6) at 2010 Stanford
Total	39–87	31%	16–50 (24%)	16–22 (42%)	5–13 (28%)	2–2 (50%)	Last updated 7 December 2023

Notes

• active players are in boldface.

Wins over top 10 players

#	Player	Rank	Event	Surface	Round	Score	Ranking
1997
1.	Amanda Coetzer	No. 10	Bol Open, Croatia	Clay	Semifinals	6–4, 6–3	NR
1998
2.	Mary Pierce	No. 6	Italian Open	Clay	3rd round	7–5, 6–4	47
1999
3.	Monica Seles	No. 4	Wimbledon, UK	Grass	3rd round	7–6(7–4), 7–6(7–4)	134
4.	Nathalie Tauziat	No. 8	Wimbledon, UK	Grass	Quarterfinals	4–6, 6–4, 7–5	134
2012
5.	Marion Bartoli	No. 9	Wimbledon, UK	Grass	2nd round	6–4, 6–3	129
2014
6.	Simona Halep	No. 2	US Open	Hard	3rd round	7–6(8–6), 6–2	121
2015
7.	Simona Halep	No. 3	French Open	Clay	2nd round	7–5, 6–1	70
8.	Karolína Plíšková	No. 8	Rogers Cup, Toronto	Hard	1st round	3–6, 7–6 (7–5) , 6–2	51
2017
9.	Agnieszka Radwańska	No. 3	Australian Open	Hard	2nd round	6–3, 6–2	79
10.	Karolína Plíšková	No. 5	Australian Open	Hard	Quarterfinals	6–4, 3–6, 6–4	79
11.	Agnieszka Radwańska	No. 8	Miami Open, U.S.	Hard	3rd round	6–0, 6–3	29