Name: Osgar O'Hoisin
Country: Ireland
Birthdate: 03.09.96, 27 years
ATP ranking: 867
TOP ranking's position: 732 (22.05.23, 32 points)
Points: 21
Prize money: 27.630 $
Matches total: 229
Win: 113
%: 49.34 %
Country: Ireland
Birthdate: 03.09.96, 27 years
ATP ranking: 867
TOP ranking's position: 732 (22.05.23, 32 points)
Points: 21
Prize money: 27.630 $
Matches total: 229
Win: 113
%: 49.34 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 11/8 | 8/4 | 0/0 | 3/4 | 0/0 | 0/0 | 0/0 |
| 2023 | 12/26 | 6/16 | 1/2 | 5/8 | 0/0 | 0/0 | 0/0 |
| 2022 | 32/29 | 22/20 | 1/2 | 9/7 | 0/0 | 0/0 | 0/0 |
| 2021 | 30/23 | 26/20 | 0/0 | 2/2 | 0/0 | 2/1 | 0/0 |
| 2020 | 10/11 | 10/11 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2019 | 1/2 | 1/1 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2018 | 9/7 | 8/5 | 0/1 | 0/0 | 1/1 | 0/0 | 0/0 |
| 2017 | 2/2 | 0/0 | 0/0 | 0/0 | 2/2 | 0/0 | 0/0 |
| 2015 | 6/8 | 6/5 | 0/0 | 0/1 | 0/1 | 0/1 | 0/0 |
| TOTAL | 113/116 | 87/82 | 2/5 | 19/22 | 3/5 | 2/2 | 0/0 |
| perc. % | 49.34 % | 51.48 % | 28.57 % | 46.34 % | 37.5 % | 50 % | 0 % |
Osgar O'Hoisin / Fixtures
| no matches found |
Osgar O'Hoisin form / surface: Hard
Osgar O'Hoisin / surface: Hard
| 21.03.24 | 2nd round | Andrea Guerrieri | Osgar O'Hoisin | 6-1, 6-3 |  | match details |  M15 Heraklion | Hard |
| 20.03.24 | 1st round | Osgar O'Hoisin | David Quayle | 4-6, 6-3, 6-2 |  | match details | ||
| 19.03.24 | qual. | Osgar O'Hoisin | Lenny Petit | 6-1, 6-4 | | match details | ||
| 18.03.24 | q 2 | Osgar O'Hoisin | Andre Kock | 6-4, 6-4 | | match details | ||
| 17.03.24 | q 1 | Osgar O'Hoisin | Ofer Hacohen | 6-1, 6-3 | | match details | ||
| 04.03.24 | q 2 | Igor Dudun | Osgar O'Hoisin | 3-6, 6-4, 10-7 | | match details |  M15 Torello | Hard |
| 03.03.24 | q 1 | Osgar O'Hoisin | Pere Prat Turro | 7-5, 6-2 | | match details | ||
| 21.02.24 | 1st round | Khumoun Sultanov | Osgar O'Hoisin | 6-2, 6-1 | | match details |  M25 Vila | Hard |
| 20.02.24 | qual. | Osgar O'Hoisin | Lukas Hellum Lilleengen | 6-0, 6-3 | | match details | ||
| 19.02.24 | q 2 | Osgar O'Hoisin | Noah Thurner | 6-2, 6-2 | | match details | ||
| 23.01.24 | qual. | Alex Kobelt | Osgar O'Hoisin | 4-6, 7-5, 10-7 | | match details |  M25 Wesley | Hard |
| 22.01.24 | q 1 | Osgar O'Hoisin | Alexey Aleshchev | 6-2, 4-6, 10-6 | | match details | ||
| 19.10.23 | 1/4 | Felix Corwin | Osgar O'Hoisin | 6-4, 7-64 | | match details |  M15 Morelia | Hard |
| 18.10.23 | 2nd round | Osgar O'Hoisin | Ryuhei Azuma | 6-3, 6-1 | | match details | ||
| 17.10.23 | 1st round | Osgar O'Hoisin | Oren Vasser | 7-62, 6-4 | | match details | ||
| 28.09.23 | 2nd round | Liam Draxl | Osgar O'Hoisin | 6-2, 6-1 | | match details | M15 Albuquerque | Hard |
| 26.09.23 | 1st round | Osgar O'Hoisin | Michael Zhu | 6-3, 6-3 | | match details | ||
| 13.08.23 | q 1 | Blaise Bicknell | Osgar O'Hoisin | 6-2, 6-4 | | match details |  Winnipeg Challenger | Hard |
| 08.08.23 | 1st round | A.j. Catanzariti | Osgar O'Hoisin | 6-3, 6-3 | | match details | M25 Southaven | Hard |
| 02.08.23 | 1st round | Rafael Tosetto | Osgar O'Hoisin | 6-4, 6-2 | | match details | M25 Decatur | Hard |
| 26.07.23 | 1st round | Ozan Baris | Osgar O'Hoisin | 5-7, 7-64, 6-1 | | match details | M25 Edwardsville | Hard |
| 28.06.23 | 1st round | Darian King | Osgar O'Hoisin | 7-62, 6-2 | | match details |  M25 Santo | Hard |
| 21.06.23 | 1st round | Connor Bruce | Osgar O'Hoisin | 4-6, 6-3, 6-2 | | match details | M15 South | Hard |
| 24.05.23 | 1st round | Nicolas Jadoun | Osgar O'Hoisin | 6-3, 7-65 | | match details |  M15 Monastir | Hard |
| 17.05.23 | 1st round | Matija Pecotic | Osgar O'Hoisin | 6-2, 7-66 | | match details | M15 Monastir | Hard |
| 03.05.23 | 1st round | Jules Marie | Osgar O'Hoisin | 6-2, 6-3 | | match details |  M25 Nottingham | Hard |
| 27.04.23 | 2nd round | Maxence Broville | Osgar O'Hoisin | 3-6, 6-4, 6-0 | | match details |  M15 Tacarigua | Hard |
| 26.04.23 | 1st round | Osgar O'Hoisin | Mehdi Sadaoui | 1-6, 6-0, 6-1 | | match details | ||
| 18.04.23 | 1st round | Yannik Rahman | Osgar O'Hoisin | 6-4, 7-5 | | match details | M15 Tacarigua | Hard |
| 23.03.23 | qual. | Tim Sandkaulen | Osgar O'Hoisin | 6-3, 6-4 | | match details | M25 Calabasas | Hard |
| 20.03.23 | q 1 | Osgar O'Hoisin | Toby Martin | 6-3, 4-6, 10-5 | | match details | ||
| 20.02.23 | qual. | Bernard Tomic | Osgar O'Hoisin | 6-1, 6-4 | | match details | Monterrey Challenger | Hard |
| 19.02.23 | q 1 | Osgar O'Hoisin | Luciano Doria | 6-3, 6-3 | | match details | ||
| 14.02.23 | 1st round | Kyle Seelig | Osgar O'Hoisin | 6-2, 6-3 | | match details | M25 Santo | Hard |
| 01.10.22 | 1/2 | Olle Wallin | Osgar O'Hoisin | 1-6, 6-3, 6-4 | | match details | M15 Albuquerque | Hard |
| 30.09.22 | 1/4 | Osgar O'Hoisin | Christian Lakoseljac | 6-1, 7-64 | | match details | ||
| 29.09.22 | 2nd round | Osgar O'Hoisin | Jakub Wojcik | 6-2, 4-6, 7-64 | | match details | ||
| 27.09.22 | 1st round | Osgar O'Hoisin | Constantinos Koshis | 6-2, 6-1 | | match details | ||
| 21.09.22 | 1st round | Gregor Ramskogler | Osgar O'Hoisin | 7-61, 6-3 | | match details | M15 Fayetteville | Hard |
| 17.09.22 | Osgar O'Hoisin | Kaipo Marshall | 6-0, 6-3 | | match details |  Davis Cup | Hard | |
| 16.09.22 | Darian King | Osgar O'Hoisin | 7-67, 6-3 | | match details | |||
| 24.08.22 | 1st round | Omni Kumar | Osgar O'Hoisin | 1-6, 6-3, 7-5 | | match details | Granby Challenger | Hard |
| 22.08.22 | qual. | Justin Boulais | Osgar O'Hoisin | 6-4, 6-2 | | match details | ||
| 21.08.22 | q 1 | Osgar O'Hoisin | Edward Winter | 4-6, 6-2, 6-4 | | match details | ||
| 01.08.22 | qual. | Gage Brymer | Osgar O'Hoisin | 7-62, 6-4 | | match details | Lexington Challenger | Hard |
| 31.07.22 | q 1 | Osgar O'Hoisin | Blu Baker | 6-3, 7-5 | | match details | ||
| 27.07.22 | 1st round | James Kent Trotter | Osgar O'Hoisin | 6-2, 6-2 | | match details | M25 Edwardsville | Hard |
| 21.07.22 | 2nd round | Cannon Kingsley | Osgar O'Hoisin | 6-4, 7-5 | | match details | M25 Champaign | Hard |
| 20.07.22 | 1st round | Osgar O'Hoisin | Karlis Ozolins | 6-3, 5-7, 7-62 | | match details | ||
| 06.07.22 | 1st round | Stefan Dostanic | Osgar O'Hoisin | 6-2, 6-2 | | match details | M15 Fountain | Hard |
| 30.06.22 | 2nd round | Khololwam Montsi | Osgar O'Hoisin | 7-5, 7-62 | | match details | M15 Los | Hard |
| 29.06.22 | 1st round | Osgar O'Hoisin | Keenan Mayo | 6-2, 6-3 | | match details | ||
| 17.06.22 | 1/4 | Dan Added | Osgar O'Hoisin | 6-1, 6-4 | | match details | M25 Santo | Hard |
| 16.06.22 | 2nd round | Osgar O'Hoisin | Alafia Ayeni | 6-3, 6-1 | | match details | ||
| 15.06.22 | 1st round | Osgar O'Hoisin | Jose Olivares | 6-3, 6-4 | | match details | ||
| 09.06.22 | 2nd round | Alafia Ayeni | Osgar O'Hoisin | 6-3, 6-4 | | match details | M25 Santo | Hard |
| 08.06.22 | 1st round | Osgar O'Hoisin | Emmett Ward | 6-3, 6-3 | | match details | ||
| 04.06.22 | 1st round | Siddhant Banthia | Osgar O'Hoisin | 6-1, 6-74, 10-6 | | match details | M15 Cancun | Hard |
| 26.05.22 | 2nd round | Haoyuan Huang | Osgar O'Hoisin | 7-5, 6-2 | | match details | M15 Cancun | Hard |
| 25.05.22 | 1st round | Osgar O'Hoisin | Eugenio Gonzalez Fitzmaurice | 6-1, 6-2 | | match details | ||
| 18.05.22 | 1st round | Haoyuan Huang | Osgar O'Hoisin | 6-4, 6-1 | | match details | M15 Cancun | Hard |
| 10.05.22 | 1st round | Ezekiel Clark | Osgar O'Hoisin | 6-4, 7-64 | | match details | M15 Cancun | Hard |
| 24.03.22 | 2nd round | Ji Sung Nam | Osgar O'Hoisin | 6-1, 6-73, 6-4 | | match details | M25 Calabasas | Hard |
| 23.03.22 | 1st round | Osgar O'Hoisin | Sho Shimabukuro | 6-2, 7-65 | | match details | ||
| 22.03.22 | qual. | Osgar O'Hoisin | Alexander Cozbinov | 7-5, 6-3 | | match details | ||
| 21.03.22 | q 1 | Osgar O'Hoisin | Joshua Sheehy | 2-6, 6-1, 10-5 | | match details | ||
| 16.03.22 | 1st round | Adrian Andreev | Osgar O'Hoisin | 6-4, 7-5 | | match details | M25 Bakersfield | Hard |
| 15.03.22 | qual. | Osgar O'Hoisin | William Bushamuka | 7-65, 6-4 | | match details | ||
| 14.03.22 | q 1 | Osgar O'Hoisin | Eduardo Nava | 6-4, 7-5 | | match details | ||
| 01.03.22 | qual. | Aaron Cohen | Osgar O'Hoisin | 6-4, 5-7, 18-16 | | match details | M15 Torello | Hard |
| 28.02.22 | q 2 | Osgar O'Hoisin | Jay Dylan Hara Friend | 6-4, 4-6, 10-8 | | match details | ||
| 27.02.22 | q 1 | Osgar O'Hoisin | Luis Utrilla | 6-4, 6-4 | | match details | ||
| 02.02.22 | 1st round | Nikolay Nedelchev | Osgar O'Hoisin | 6-3, 4-6, 6-2 | | match details | M15 Villena | Hard |
| 01.02.22 | qual. | Osgar O'Hoisin | Jan Sebesta | 6-2, 6-0 | | match details | ||
| 31.01.22 | q 2 | Osgar O'Hoisin | Max Benaim | 6-4, 6-3 | | match details | ||
| 30.01.22 | q 1 | Osgar O'Hoisin | Juan Carlos Garcia Garcia | 6-0, 6-1 | | match details | ||
| 10.12.21 | 1/4 | Peter Bertran | Osgar O'Hoisin | 6-4, 6-1 | | match details | M15 Santo | Hard |
| 09.12.21 | 2nd round | Osgar O'Hoisin | Roy Smith | 5-7, 6-4, 6-4 | | match details | ||
| 08.12.21 | 1st round | Osgar O'Hoisin | Stefan Cizelj-Zivkovic | 6-1, 6-2 | | match details | ||
| 07.12.21 | qual. | Osgar O'Hoisin | Maikol Ponte | 6-0, 6-3 | | match details | ||
| 06.12.21 | q 2 | Osgar O'Hoisin | Xavier Lawrence | 6-2, 6-1 | | match details | ||
| 01.12.21 | 1st round | Jorge Brian Panta Herreros | Osgar O'Hoisin | 5-7, 7-5, 6-1 | | match details | M15 Santo | Hard |
| 25.11.21 | 2nd round | Colin Sinclair | Osgar O'Hoisin | 6-2, 6-3 | | match details |  M15 Guatemala | Hard |
| 23.11.21 | 1st round | Osgar O'Hoisin | Jose Daniel Bendeck | 6-2, 6-1 | | match details | ||
| 19.10.21 | 1st round | Juan Sebastian Osorio | Osgar O'Hoisin | 3-6, 7-5, 6-4 | | match details | M15 Cancun | Hard |
| 18.10.21 | qual. | Osgar O'Hoisin | Enrique Macias | 6-3, 6-2 | | match details | ||
| 17.10.21 | q 1 | Osgar O'Hoisin | Jacob Tapia | 6-0, 6-4 | | match details | ||
| 29.09.21 | qual. | Stefano Liokossis | Osgar O'Hoisin | 6-4, 4-3, Osgar O'Hoisin - retired | | match details | M15 Cancun | Hard |
| 27.09.21 | q 2 | Osgar O'Hoisin | Jack Gibbens | 6-3, 6-75, 10-7 | | match details | ||
| 26.09.21 | q 1 | Osgar O'Hoisin | Babji Siva Atturu | 6-1, 6-0 | | match details | ||
| 25.09.21 | 1/2 | Gerardo Lopez Villasenor | Osgar O'Hoisin | 6-4, 6-2 | | match details | M15 Cancun | Hard |
| 24.09.21 | 2nd round | Osgar O'Hoisin | Jonas Maier | 3-6, 6-4, 6-4 | | match details | ||
| 24.09.21 | 1/4 | Osgar O'Hoisin | Leonardo Civita-Telles | 7-5, 2-6, 7-5 | | match details | ||
| 22.09.21 | 1st round | Osgar O'Hoisin | Luciano Doria | 6-4, 6-2 | | match details | ||
| 22.09.21 | qual. | Emil Reinberg | Osgar O'Hoisin | 6-3, 6-3 | | match details | ||
| 21.09.21 | q 2 | Osgar O'Hoisin | Tyler Bowers | 6-3, 6-4 | | match details | ||
| 19.09.21 | q 1 | Osgar O'Hoisin | Cristobal Zamorano | 6-2, 6-0 | | match details | ||
| 15.09.21 | qual. | Perry Gregg | Osgar O'Hoisin | 6-2, 6-3 | | match details | M15 Champaign | Hard |
| 14.09.21 | q 1 | Osgar O'Hoisin | Eric Sock | 6-2, 6-1 | | match details | ||
| 26.07.21 | q 2 | Sahar Simon | Osgar O'Hoisin | 4-6, 6-4, 10-6 | | match details | M15 Castelo | Hard |
| 25.07.21 | q 1 | Osgar O'Hoisin | Ivan Zaytsev | 7-5, 6-0 | | match details | ||
| 18.07.21 | q 1 | Raphael Lambling | Osgar O'Hoisin | 1-6, 6-3, 10-7 | | match details | M25 Idanha | Hard |
| 13.07.21 | qual. | Yankel Zemel | Osgar O'Hoisin | 6-4, 4-6, 12-10 | | match details | M25 Idanha | Hard |
| 12.07.21 | q 2 | Osgar O'Hoisin | Guilherme Valdoleiros | 6-4, 6-1 | | match details | ||
| 11.07.21 | q 1 | Osgar O'Hoisin | Martin Breysach | 6-4, 6-4 | | match details | ||
| 30.06.21 | 1st round | Kaichi Uchida | Osgar O'Hoisin | 6-3, 7-5 | | match details | M25 Bakio | Hard |
| 29.06.21 | qual. | Osgar O'Hoisin | Marco Brugnerotto | 6-2, 4-6, 10-8 | | match details | ||
| 27.06.21 | q 1 | Osgar O'Hoisin | Antonio Prat | 6-2, 6-2 | | match details | ||
| 24.05.21 | q 2 | John Echeverria | Osgar O'Hoisin | 6-75, 6-3, 16-14 | | match details | M15 Marbella | Hard |
| 23.05.21 | q 1 | Osgar O'Hoisin | Morad-Mackey Den Drijver | 6-1, 6-0 | | match details | ||
| 26.04.21 | q 2 | Harry Wendelken | Osgar O'Hoisin | 4-6, 6-4, 10-7 | | match details | M15 Monastir | Hard |
| 25.04.21 | q 1 | Osgar O'Hoisin | Vladimir Cherkovets | 6-2, 6-0 | | match details | ||
| 19.04.21 | q 1 | Harry Wendelken | Osgar O'Hoisin | 7-61, 6-2 | | match details | M15 Monastir | Hard |
| 11.04.21 | q 1 | Fons Van Sambeek | Osgar O'Hoisin | 6-3, 6-2 | | match details | M15 Monastir | Hard |
| 28.03.21 | q 1 | Suraj R Prabodh | Osgar O'Hoisin | 3-6, 7-5, 10-5 | | match details |  M15 New | Hard |
| 08.03.21 | q 2 | Osgar O'Hoisin | Gunjan Jadhav | 6-1, 6-0 | | match details | M15 Indore | Hard |
| 08.03.21 | qual. | Madhwin Kamath | Osgar O'Hoisin | 6-3, 6-3 | | match details | ||
| 07.03.21 | q 1 | Osgar O'Hoisin | Sai Karteek Reddy Ganta | 6-3, 6-1 | | match details | ||
| 02.03.21 | 1st round | Zane Khan | Osgar O'Hoisin | 6-3, 6-3 | | match details | M15 Lucknow | Hard |
| 01.03.21 | qual. | Osgar O'Hoisin | Leonardo Catani | 6-2, 6-1 | | match details | ||
| 28.02.21 | q 1 | Osgar O'Hoisin | Henry Patten | 3-6, 7-65, 10-8 | | match details | ||
| 31.01.21 | q 1 | Inigo Cervantes | Osgar O'Hoisin | 1-6, 7-60, 10-8 | | match details | M25 Villena | Hard |
| 16.12.20 | 1st round | Alexander Erler | Osgar O'Hoisin | 6-4, 7-5 | | match details | M15 Monastir | Hard |
| 14.12.20 | qual. | Osgar O'Hoisin | Jack Gibbens | 6-4, 6-3 | | match details | ||
| 13.12.20 | q 2 | Osgar O'Hoisin | Mikalai Haliak | 6-2, 6-3 | | match details | ||
| 13.12.20 | q 1 | Osgar O'Hoisin | Lilian Breut | 6-4, 2-0, Lilian Breut - retired | | match details | ||
| 06.12.20 | q 1 | Cesar Bourgois | Osgar O'Hoisin | 5-7, 6-4, 11-9 | | match details | M15 Monastir | Hard |
| 29.11.20 | q 1 | Adrian Oetzbach | Osgar O'Hoisin | 1-6, 6-1, 10-8 | | match details | M15 Monastir | Hard |
| 02.11.20 | q 2 | David Volfson | Osgar O'Hoisin | 6-1, 6-3 | | match details | M15 Quinta | Hard |
| 02.11.20 | q 1 | Osgar O'Hoisin | Ivo Isqueiro | 6-2, 6-3 | | match details | ||
| 25.10.20 | q 1 | Goncalo Falcao | Osgar O'Hoisin | 6-2, 6-3 | | match details | M25 Vale | Hard |
| 09.03.20 | q 1 | Noah Berry | Osgar O'Hoisin | 6-4, 6-2 | | match details | M15 Cancun | Hard |
| 19.02.20 | qual. | Felipe Martinez Sarrasague | Osgar O'Hoisin | 6-4, 6-4 | | match details | M15 Cancun | Hard |
| 18.02.20 | q 2 | Osgar O'Hoisin | Jordan Hasson | 6-4, 4-6, 10-8 | | match details | ||
| 17.02.20 | q 1 | Osgar O'Hoisin | Rodolfo Villavicencio Castro | 6-1, 6-2 | | match details | ||
| 11.02.20 | qual. | David Volfson | Osgar O'Hoisin | 6-2, 6-1 | | match details | M15 Cancun | Hard |
| 11.02.20 | q 2 | Osgar O'Hoisin | Michel-Alexandre Fortin | 6-2, 6-3 | | match details | ||
| 10.02.20 | q 1 | Osgar O'Hoisin | Jordan Hasson | 6-4, 6-4 | | match details | ||
| 04.02.20 | q 2 | David Volfson | Osgar O'Hoisin | 7-5, 6-3 | | match details | M15 Cancun | Hard |
| 02.02.20 | q 1 | Osgar O'Hoisin | Rodrigo Banzer | 7-5, 6-3 | | match details | ||
| 28.01.20 | q 2 | Matic Spec | Osgar O'Hoisin | 6-4, 6-75, 10-4 | | match details | M15 Cancun | Hard |
| 27.01.20 | q 1 | Osgar O'Hoisin | Nikolay Sysoev | 6-0, 6-1 | | match details | ||
| 20.01.20 | q 1 | Jesse Flores | Osgar O'Hoisin | 6-75, 6-0, 10-6 | | match details | M15 Cancun | Hard |
| 09.09.19 | q 2 | Kento Yamada | Osgar O'Hoisin | 6-2, 6-1 | | match details | M15 Champaign | Hard |
| 08.09.19 | q 1 | Osgar O'Hoisin | Francis Pare | 6-1, 6-2 | | match details | ||
| 21.08.18 | 1st round | Finn Bass | Osgar O'Hoisin | 6-2, 6-3 | | match details | Portugal F16 | Hard |
| 20.08.18 | qual. | Osgar O'Hoisin | Alec Adamson | Alec Adamson - walk over | | match details | ||
| 19.08.18 | q 2 | Osgar O'Hoisin | Hironori Koyanagi | 6-3, 6-2 | | match details | ||
| 18.08.18 | q 1 | Osgar O'Hoisin | Muzingaye Dickson Andile Sibanda | 6-4, 6-1 | | match details | ||
| 12.08.18 | q 2 | Joseph Rotheram | Osgar O'Hoisin | 6-4, 3-6, 7-67 | | match details | Portugal F15 | Hard |
| 11.08.18 | q 1 | Osgar O'Hoisin | Alexander Jhun | 1-6, 6-1, 1-0, Alexander Jhun - retired | | match details | ||
| 16.07.18 | q 2 | Osgar O'Hoisin | Stratton Brown | 6-2, 6-3 | | match details | USA F19b | Hard |
| 16.07.18 | qual. | Aleksandar Kovacevic | Osgar O'Hoisin | 6-4, 6-3 | | match details | ||
| 15.07.18 | q 1 | Osgar O'Hoisin | Dominic Bechard | 6-2, 6-2 | | match details | ||
| 08.07.18 | q 2 | Alex Rybakov | Osgar O'Hoisin | 6-3, 6-3 | | match details | Winnetka Challenger | Hard |
| 07.07.18 | q 1 | Osgar O'Hoisin | Emmett Ward | 6-2, 2-6, 6-3 | | match details | ||
| 18.06.18 | q 2 | Gage Brymer | Osgar O'Hoisin | 6-4, 6-74, 7-65 | | match details | USA F15 | Hard |
| 17.06.18 | q 1 | Osgar O'Hoisin | Collin Thomson | 6-4, 7-5 | | match details | ||
| 02.11.15 | q 1 | Osgar O'Hoisin | Milan Drinic | 7-62, 6-710, 6-3 | | match details | Greece F10 | Hard |
| 02.11.15 | qual. | Miljan Zekic | Osgar O'Hoisin | 6-3, 6-2 | | match details | ||
| 02.11.15 | q 2 | Osgar O'Hoisin | Zeljko Milovic | Zeljko Milovic - walk over | | match details | ||
| 26.10.15 | q 1 | Osgar O'Hoisin | Anze Loviscek | 7-5, 6-2 | | match details | Greece F9 | Hard |
| 26.10.15 | q 2 | Kevin Kralj | Osgar O'Hoisin | 6-0, 6-2 | | match details | ||
| 19.10.15 | q 1 | Masayoshi Ono | Osgar O'Hoisin | 6-3, 6-3 | | match details | Greece F8 | Hard |
| 12.10.15 | q 2 | Osgar O'Hoisin | Michele Longo | 6-3, 5-7, 7-66 | | match details | Greece F7 | Hard |
| 12.10.15 | 1st round | Theo Fournerie | Osgar O'Hoisin | 6-3, 6-4 | | match details | ||
| 12.10.15 | qual. | Osgar O'Hoisin | Tobias Dankl | 4-6, 6-3, 7-5 | | match details | ||
| 31.08.15 | q 1 | Osgar O'Hoisin | Nicholas Nugent | 7-5, 6-4 | | match details | Great Britain | Hard |
| 31.08.15 | q 2 | Bruce Strachan | Osgar O'Hoisin | 6-2, 7-65 | | match details |
