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Dean O'Brien
Full name	Dean Kevin O'Brien
Country (sports)	South Africa
Residence	Atlanta, United States
Born	15 May 1990 (age 34); Johannesburg, South Africa
Height	1.78 m (5 ft 10 in)
Plays	Right-handed (two-handed both sides)
College	Georgia Tech
Coach	Jaime Cortez
Prize money	$ 63,357
Official website	http://deankobrien.com/tennis/
Singles
Career record	0–2
Career titles	0 ; 0 Challenger, 0 Futures
Highest ranking	No. 507 (21 April 2014)
Doubles
Career record	2–2
Career titles	0 ; 1 Challenger, 7 Futures
Highest ranking	No. 115 (23 May 2016)
	Last updated on: 25 May 2021.

Dean Kevin O'Brien (born 15 May 1990 in Sandton) is a South African tennis player. He played college tennis for the Georgia Tech Yellow Jackets.

O'Brien has a career high ATP singles ranking of 507 achieved on 21 April 2014. He also has a career high ATP doubles ranking of 115 achieved on 23 May 2016. He has won 6 ITF doubles titles.

O'Brien won his first ATP Challenger title at the 2015 Levene Gouldin & Thompson Tennis Challenger in the doubles event partnering Ruan Roelofse.

Overall, O'Brien has reached 26 career doubles finals with a record of 8 wins and 18 losses, among which includes a 1–6 record in ATP Challenger Tour finals.

Playing for the South Africa in Davis Cup, O'Brien has a W/L record of 1–2.

ATP Challenger and ITF Futures finals

Doubles: 26 (8–18)

Legend
ATP Challenger (1–6)
ITF Futures (7–12)

Finals by surface
Hard (7–17)
Clay (1–1)
Grass (0–0)
Carpet (0–0)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Jun 2009	Spain F12, Melilla	Futures	Hard	Borja Zarco	Ignacio Coll Riudavets Andoni Vivanco-Guzmán	5–7, 6–1, [3–10]
Loss	0–2	Mar 2013	USA F6, Harlingen	Futures	Hard	Kevin King	Ruben Gonzales Chris Letcher	2–6, 3–6
Loss	0–3	Jun 2013	Israel F10, Herzliya	Futures	Hard	Antoine Benneteau	Elie Rousset Albano Olivetti	3–6, 6–7^(6–8)
Win	1–3	Jun 2013	Turkey F25, Istanbul	Futures	Hard	Ruan Roelofse	Baris Erguden Barkin Yalcinkale	6–1, 4–6, [11–9]
Loss	1–4	Sep 2013	France F16, Plaisir	Futures	Hard	Colin O'Brien	Julien Obry Rémi Boutillier	6–3, 6–7^(4–7), [14–16]
Loss	1–5	Oct 2013	Mexico F13, Veracruz	Futures	Hard	Juan Carlos Spir	César Ramírez Alex Llompart	4–6, 6–3, [5–10]
Loss	1–6	Oct 2013	Mexico F14, Pachuca	Futures	Hard	Juan Carlos Spir	Christopher Diaz-Figueroa Darian King	4–6, 6–2, [8–10]
Win	2–6	Nov 2013	Colombia F6, Popayán	Futures	Hard	Juan Carlos Spir	Jonas Luetjen Steffen Zornosa	6–4, 6–0
Loss	2–7	Nov 2013	Colombia F7, Bogotá	Futures	Hard	Juan Carlos Spir	Eduardo Struvay Felipe Mantilla	6–7^(5–7), 6–2, [7–10]
Loss	2–8	Apr 2014	Mexico F1, Querétaro	Futures	Hard	Kevin King	César Ramírez Miguel Ángel Reyes-Varela	3–6, 5–7
Loss	2–9	May 2014	Mexico F2, Córdoba	Futures	Hard	Kevin King	César Ramírez Miguel Ángel Reyes-Varela	6–7^(1–7), 1–6
Win	3–9	May 2014	Mexico F3, Mexico City	Futures	Hard	Kevin King	Mateo Nicolas Martinez Alex Llompart	6–3, 6–4
Win	4–9	Jun 2014	South Africa F3, Sun City	Futures	Hard	Ruan Roelofse	Nicolaas Scholtz Tucker Vorster	7–6^(8–6), 6–4
Loss	4–10	Aug 2014	Colombia F4, Medellín	Futures	Clay	Juan Carlos Spir	Fabiano de Paula Nicolas Jarry	6–2, 2–6, [9–11]
Win	5–10	Sep 2014	Colombia F5, Ibagué	Futures	Clay	Nicolás Barrientos	Fabiano de Paula Marcelo Demoliner	6–3, 5–7, [10–7]
Loss	5–11	Dec 2014	Mexico F15, Mérida	Futures	Hard	Juan Carlos Spir	Eric Quigley Philip Bester	6–4, 6–7^(5–7), [10–12]
Loss	5–12	Mar 2015	Canada F1, Gatineau	Futures	Hard	Kevin King	Germain Gigounon Daniel Smethurst	4–6, 4–6
Win	6–12	Mar 2015	Canada F2, Sherbrooke	Futures	Hard	Kevin King	Edward Corrie Daniel Smethurst	6–4, 2–6, [10–5]
Loss	6–13	Jun 2015	Gimcheon, South Korea	Challenger	Hard	Ruan Roelofse	Zhe Li Jose Statham	4–6, 2–6
Win	7–13	Jun 2015	Uzbekistan F4, Namangan	Futures	Hard	Ruan Roelofse	Jurabek Karimov Sanjar Fayziev	7–5, 6–4
Win	8–13	Jul 2015	Binghamton, United States	Challenger	Hard	Ruan Roelofse	Dennis Novikov Daniel Nguyen	6–1, 7–6^(7–0)
Loss	8–14	Aug 2015	Lexington, United States	Challenger	Hard	Ruan Roelofse	Carsten Ball Brydan Klein	4–6, 6–7^(4–7)
Loss	8–15	Oct 2015	Las Vegas, United States	Challenger	Hard	Ruan Roelofse	Carsten Ball Dustin Brown	6–3, 3–6, [6–10]
Loss	8–16	Feb 2016	Dallas, United States	Challenger	Hard	Sekou Bangoura	Nicolas Meister Eric Quigley	1–6, 1–6
Loss	8–17	May 2016	Bangkok, Thailand	Challenger	Hard	Ruan Roelofse	Jason Jung Chen Ti	4–6, 6–3, [8–10]
Loss	8–18	Feb 2017	Morelos, Mexico	Challenger	Hard	Kevin King	Jackson Withrow Austin Krajicek	7–6^(7–4), 6–7^(5–7), [9–12]