Player data updated: 2026-09-01 02:16 UTC

Dean O'Brien

RSA Age 36 178 cm / 5'10" Plays: Right-Handed

Dean O'Brien represented South Africa on the ATP Tour and reached a career-high ranking of No. 507. In TennisDB's records, Dean O'Brien finished with a career record of 0–0 and no singles titles.

Peak ranking
507 (Apr 21, 2014)
Elo peak
1502 (4th percentile)
Career record
0–0
Career titles
0
Prize money
$63,357

Records cover recorded main-draw singles results in TennisDB's ATP event archive, including credited walkovers; qualifying is shown separately below.

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ATP Matches full match log →

Dean O'Brien's recent, live, and scheduled ATP matches
OpponentScoreResultH2HMatch DataDateRoundTournamentCategorySurface
Victor Estrella 6-7(2) 4-6 L — Match data Feb 10, 2014 Q1 Q Memphis ATP 250 Hard
Matthew Ebden #117 1-6 1-6 L H2H Match data Jul 22, 2013 Q2 Q Atlanta ATP 250 Hard
Juan-Carlos Spir 7-6(5) 6-7(3) 6-2 W H2H Match data Jul 22, 2013 Q1 Q Atlanta ATP 250 Hard
Alex Kuznetsov #208 2-6 2-6 L H2H Match data Jul 16, 2012 Q1 Q Atlanta ATP 250 Hard

Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.

Career Results

Dean O'Brien career results by season
SeasonAgeTypeWLMWin %Start RankEnd Rank
201222Qualifying Q0110.0%——
201323Qualifying Q11250.0%——
201424Qualifying Q0110.0%——
Career—000———

Career Results by Surface

Dean O'Brien career results by season and surface
SeasonAgeType HardClayGrassTotal
WLMWin %WLMWin %WLMWin % WLMWin %
201222Qualifying Q 0110.0%———————— 0110.0%
201323Qualifying Q 11250.0%———————— 11250.0%
201424Qualifying Q 0110.0%———————— 0110.0%

Advanced Stats

Dean O'Brien advanced statistics by season
Season Age Elo P+ Serve+ Return+ PD TPW% Hard Elo Clay Elo Grass Elo Set Win % Set Margin Dec. Set Tiebreak Pressure+ Schedule
2012 22 1486 96.0 — — — — — — — — — — — — —
2013 23 1491 96.7 — — — — — — — — — — — — —
2014 24 1475 99.4 — — — — — — — — — — — — —
Career 1502 96.3 — — — — — — — — — — — — —

Tournament Results by Category

ATP 250

Dean O'Brien ATP 250 results by season
SeasonAge ATLMEM W-L
Win %
201222 Q1— 0–1 (0%)
201323 Q2— 1–1 (50%)
201424 —Q1 0–1 (0%)
W-L 1–2
(33%)		0–1
(0%)		 1–3
(25%)

Results show the best round reached per tournament and season.

ATP Ranking History full ranking history →

Current rank
1223
Career high
507
Career-high date
Apr 21, 2014
First Top 100
—
First Top 50
—
First Top 20
—
First Top 10
—

Ranking History Matrix

Dean O'Brien ranking history by month and season
SeasonAgeJanFebMarAprMayJunJulAugSepOctNovDec
200919——————173517011587154215161505
201020150314851476147814681538——————
201121—————1581148915081523151915141510
201222150214991369126812751384146614661341124211901201
2013231196112910231077708691614577565562534532
201424524509516509555527571614614619681699
2015257037637697959901310127112941341133810861091
2016261090108810891083108810911085110212091223——

Frequently Asked Questions

How old is Dean O'Brien?
Dean O'Brien is 36 years old, born on May 15, 1990.
Which country does Dean O'Brien represent?
Dean O'Brien represents South Africa in TennisDB's ATP records.
How tall is Dean O'Brien?
Dean O'Brien is 178 cm / 5'10".
Is Dean O'Brien left-handed or right-handed?
Dean O'Brien plays right-handed.
How many Grand Slams has Dean O'Brien won?
Dean O'Brien has not won a Grand Slam title.
How many Masters 1000 titles has Dean O'Brien won?
TennisDB does not group any of Dean O'Brien's titles under the modern Masters 1000 category.
What is Dean O'Brien's highest ATP ranking?
Dean O'Brien's career-high ATP singles ranking is world No. 507, first achieved on April 21, 2014.
What is Dean O'Brien's career win-loss record?
Dean O'Brien has a career ATP singles record of 0 wins and 0 losses.
How much career prize money has Dean O'Brien earned?
Dean O'Brien has earned at least $63,357 in career prize money from professional tennis.