Florin Mergea (; born 26 January 1985) is a Romanian former professional tennis player. As a doubles specialist, he has reached the final of the ATP World Tour Finals in 2015 and won an ATP Masters title at the Mutua Madrid Open earlier that year. He achieved a career-high ATP ranking of World No. 7 in doubles (July 2015) and World No. 243 in singles (May 2005).
Junior career As a junior Mergea compiled a singles win–loss record of 87–33, reaching as high as No. 2 in the world in July 2003 (and No. 1 in doubles). Along the way, he beat future top ten singles players like Andy Murray, Tomas Berdych, Gaël Monfils and Jo-Wilfried Tsonga. As well as winning the Boys' Singles at Wimbledon in 2003 and being runner-up in the Boys' Singles tournament at the 2003 Australian Open, he won the Boys' Doubles in 2002 alongside compatriot Horia Tecău.
Professional career The transition to the seniors tour proved difficult for Mergea. After turning pro in 2003, he struggled to make a breakthrough. Injuries hampered his career and in spite of reaching no. 103 in the doubles rankings, his lack of singles success and limited support drained his motivation. In 2010, Mergea decided to retire from tennis, a decision he turned around months later, with the help of his wife, Daiana. With renewed focus on the doubles game, his rankings rose steadily, playing alongside the likes of Andrei Daescu and Philipp Marx. After reaching thirteen challenger finals within little over a year, Mergea won his first ATP title in October 2013, when he teamed up with Lukas Rosol for the Erste Bank Open, Vienna.
Tour success continued in 2014, as he won the Royal Guard Open in Vina del Mar, with veteran Oliver Marach, and his first ATP 500 title at the International German Open in Hamburg, with Marin Draganja. Furthermore, siding with the Croatian, Mergea reached the French Open semifinal.
After starting 2015 with Dominic Inglot and reaching two finals, his injury plagued British partner needed time to recover. This gave way to the formation of his partnership with Rohan Bopanna, whom he had played with successfully at the Shanghai Masters the previous season. Together, they found consistency in their results, while winning the Madrid Masters and the Mercedes Cup in Stuttgart. In November, the team were the last to qualify for the ATP World Tour Finals. There, in spite of their seeding, they reached the final against the year-end No. 1 team of Mergea's Davis Cup and former juniors' partner, Romanian Horia Tecău, who played alongside Jean Julien Rojer.
He won the 2016 BRD Năstase Țiriac Trophy and the silver medal at the 2016 Olympic Games in Rio de Janeiro, alongside compatriot Horia Tecău.
In 2017, he won the title in Barcelona partnering with Aisam-ul-Haq Qureshi.
Mergea announced his retirement from professional tennis in March 2022, in order to focus on training young tennis players.
Significant finals
Year-end championships Doubles: 1 (1 runner-up) Result Year Championship Surface Partner OpponentsScoreLoss2015ATP World Tour Finals, LondonHard (i) Rohan Bopanna Jean-Julien Rojer Horia Tecău4–6, 3–6
Masters 1000 finals
Doubles: 2 (1 title, 1 runner-up)
Result Year Tournament Surface Partner OpponentsScoreWin2015Madrid OpenClay Rohan Bopanna Marcin Matkowski Nenad Zimonjić6–2, 6–7(5–7), [11–9]Loss2016Madrid OpenClay Rohan Bopanna Jean-Julien Rojer Horia Tecău4–6, 6–7(5–7)
Olympic medal matches
Doubles: 1 (1 silver medal) Result Year Championship Surface Partner OpponentsScoreSilver 2016 Summer Olympics, Rio de Janeiro Hard Horia Tecau Marc Lopez Rafael Nadal2–6, 6–3, 4–6
ATP career finals
Doubles: 15 (7 titles, 8 runners-up) LegendGrand Slam Tournaments (0–0)ATP World Tour Finals (0–1)ATP World Tour Masters 1000 (1–1)Olympic Games (0–1)ATP World Tour 500 Series (2–1)ATP World Tour 250 Series (4–4)Finals by surfaceHard (1–4)Clay (5–2)Grass (1–1)Carpet (0–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin1–0Vienna Open, Austria250 SeriesHard (i) Lukáš Rosol Daniel Nestor Julian Knowle7–5, 6–4Win2–0Chile Open, Chile250 SeriesClay Oliver Marach Juan Sebastián Cabal Robert Farah6–3, 6–4Win3–0German Open, Germany500 SeriesClay Marin Draganja Alexander Peya Bruno Soares6–4, 7–5Loss3–1Auckland Open, New Zealand250 SeriesHard Dominic Inglot Raven Klaasen Leander Paes6–7(1–7), 4–6Loss3–2Open Sud de France, France250 SeriesHard (i) Dominic Inglot Marcus Daniell Artem Sitak6–3, 4–6, [14–16]Loss3–3Grand Prix Hassan II, Morocco250 SeriesClay Rohan Bopanna Rameez Junaid Adil Shamasdin6–3, 2–6, [7–10]Win4–3Madrid Open, SpainMasters 1000Clay Rohan Bopanna Marcin Matkowski Nenad Zimonjić6–2, 6–7(5–7), [11–9]Win5–3Stuttgart Open, Germany250 SeriesGrass Rohan Bopanna Alexander Peya Bruno Soares5–7, 6–2, [10–7]Loss5–4Halle Open, Germany500 SeriesGrass Rohan Bopanna Raven Klaasen Rajeev Ram6–7(5–7), 2–6Loss5–5ATP World Tour Finals, United KingdomTour FinalsHard (i) Rohan Bopanna Jean-Julien Rojer Horia Tecău4–6, 3–6Loss5–6Sydney International, Australia250 SeriesHard Rohan Bopanna Jamie Murray Bruno Soares3–6, 6–7(6–8)Win6–6Romanian Open, Romania250 SeriesClay Horia Tecău Chris Guccione André Sá7–5, 6–4Loss6–7Madrid Open, SpainMasters 1000Clay Rohan Bopanna Jean-Julien Rojer Horia Tecău4–6, 6–7(5–7)Loss6–8Olympic Games, BrazilOlympicsHard Horia Tecău Marc López Rafael Nadal2–6, 6–3, 4–6Win7–8Barcelona Open, Spain500 SeriesClay Aisam-ul-Haq Qureshi Philipp Petzschner Alexander Peya6–4, 6–3
ATP Challenger and ITF Futures finals Singles 13 (7 titles, 6 runners-up) LegendATP Challenger Tour (0–0)ITF Futures Circuit (7–6)
ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Kuwait F2, MishrefFuturesHard Ivo Klec6–3, 3–6, 4–6Loss0–2Kuwait F3, MishrefFuturesHard Ivo Klec4–6, 4–6Win1–2Lebanon F2, JouniehFuturesClay Augustin Gensse4–6, 6–3, 6–3Win2–2France F18, Saint-BrieucFuturesHard (i) Nicolas Thomann6–7(4–7), 7–6(8–6), 6–3Win3–2USA F1, TampaFuturesHard Matías Boeker6–2, 6–3Win4–2Kuwait F1, MishrefFuturesHard Mohammad Ghareeb4–6, 6–3, 7–5Win5–2France F16, NeversFuturesHard (i) Jean-Michel Pequery7–6(7–4), 6–7(2–7), 6–2Loss5–3France F18, La Roche-sur-YonFuturesHard (i) Olivier Vandewiele6–7(2–7), 6–3, 4–6Loss5–4Romania F5, ZalăuFuturesClay Adrian Cruciat4–6, 6–3, 3–6Loss5–5Romania F6, PiteștiFuturesClay Gabriel Moraru3–6, 4–6Win6–5Germany F1, NußlochFuturesCarpet (i) Dustin Brown6–3, 6–2Win7–5Romania F2, BucharestFuturesClay Gabriel Moraru2–6, 7–5, 7–6(7–3)Loss7–6Canada F2, MontrealFuturesHard (i) Martin Verkerk7–6(10–8), 6–7(9–11), 4–6
Doubles 77 (45 titles, 32 runners-up) LegendATP Challenger Tour (17–18)ITF Futures Circuit (28–14)