United Kingdom: Wimbledon - Mixed Doubles - Main |
| Semi-finals | Pavic M./Kichenok L. | O'Mara J./Nicholls O. | 2:1 (7:66, 4:6, 6:3) | details | 12.07.2023 |
| Quarter-finals | O'Mara J./Nicholls O. | Ebden M./Perez E. | 2:0 (7:5, 7:5) | details | 11.07.2023 |
| 1/8-finals | Koolhof W./Fernandez L. | O'Mara J./Nicholls O. | 1:2 (4:6, 6:3, 2:6) | details | 10.07.2023 |
United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Broady L./O'Mara J. | Cabral F./Matos R. | 0:2 (5:7, 4:6) | details | 09.07.2023 |
United Kingdom: Wimbledon - Mixed Doubles - Main |
| 1/16-finals | O'Mara J./Nicholls O. | Roger-Vasselin E./Flipkens K. | 2:1 (1:6, 7:66, 6:2) | details | 07.07.2023 |
United Kingdom: Eastbourne - Doubles - Main |
| Quarter-finals | Dodig I./Krajicek A. | Broady L./O'Mara J. | 2:0 (6:4, 6:4) | details | 28.06.2023 |
| 1/8-finals | Broady L./O'Mara J. | Cash J./Johnson L. | 2:0 (6:4, 7:66) | details | 26.06.2023 |
United Kingdom: London - Doubles - Main |
| 1/8-finals | Evans D./Glasspool L. | Broady L./O'Mara J. | 2:0 (7:65, 6:4) | details | 20.06.2023 |
United Kingdom: Nottingham - Doubles - Main |
| Final | Fearnley J./Monday J. | Broady L./O'Mara J. | 2:1 (6:3, 66:7, 10:7) | details | 17.06.2023 |
| Semi-finals | Samuel T./Thomson C. | Broady L./O'Mara J. | 1:2 (7:69, 5:7, 3:10) | details | 16.06.2023 |
| Quarter-finals | Broady L./O'Mara J. | Bhambri Y./Myneni S. | 2:0 (6:1, 6:4) | details | 15.06.2023 |
| 1/8-finals | Broady L./O'Mara J. | Balaji N. S./Qureshi A. | 2:0 (6:4, 6:4) | details | 14.06.2023 |
United Kingdom: Surbiton - Doubles - Main |
| Final | Broady L./O'Mara J. | Popyrin A./Vukic A. | 2:1 (6:4, 5:7, 10:8) | details | 10.06.2023 |
| Semi-finals | Cash J./Patten H. | Broady L./O'Mara J. | WO. | details | 09.06.2023 |
| Quarter-finals | Broady L./O'Mara J. | Grenier H./Lestienne C. | 2:0 (6:3, 6:2) | details | 08.06.2023 |
| 1/8-finals | Kovacevic A./Shang J. | Broady L./O'Mara J. | 0:2 (3:6, 3:6) | details | 07.06.2023 |
| 1/8-finals | Blumberg W./Purcell M. | Broady L./O'Mara J. | CAN. | details | 07.06.2023 |
Spain: Barcelona - Doubles - Qualification |
| Semi-finals | Cervantes I./Roca Batalla O. | Evans D./O'Mara J. | 2:1 (4:6, 7:5, 10:4) | details | 15.04.2023 |
Morocco: Marrakech - Doubles - Main |
| 1/8-finals | Evans D./O'Mara J. | Jebavy R./Pavlasek A. | 0:2 (3:6, 2:6) | details | 03.04.2023 |
Switzerland: Biel - Doubles - Main |
| 1/8-finals | Frantzen C./Jebens H. | Broady L./O'Mara J. | 2:1 (3:6, 7:5, 10:5) | details | 21.03.2023 |
Qatar: Doha - Doubles - Main |
| Semi-finals | Bopanna R./Ebden M. | Evans D./O'Mara J. | 2:0 (6:4, 6:3) | details | 23.02.2023 |
| Quarter-finals | Evans D./O'Mara J. | Nys H./Zielinski J. | 2:0 (7:63, 7:5) | details | 22.02.2023 |
| 1/8-finals | Evans D./O'Mara J. | Ivashka I./Rublev A. | 2:1 (65:7, 7:5, 10:7) | details | 20.02.2023 |
Bahrain: Manama - Doubles - Main |
| Semi-finals | Jebavy R./O'Mara J. | Gonzales R./Romboli F. | 1:2 (5:7, 6:4, 5:10) | details | 17.02.2023 |
| Quarter-finals | Jebavy R./O'Mara J. | Chung Y./Gengel M. | 2:0 (6:3, 6:4) | details | 16.02.2023 |
| 1/8-finals | Jebavy R./O'Mara J. | Kopriva V./Kotov P. | 2:0 (6:3, 7:66) | details | 15.02.2023 |
USA: Dallas - Doubles - Main |
| 1/8-finals | Murray J./Venus M. | O'Mara J./Smith J. P. | 2:0 (6:2, 6:3) | details | 08.02.2023 |
France: Quimper - Doubles - Main |
| Quarter-finals | O'Mara J./Walkow S. | Fallert F./Jebens H. | 1:2 (6:3, 4:6, 8:10) | details | 27.01.2023 |
| 1/8-finals | O'Mara J./Walkow S. | Manafov V./Margaroli L. | 2:1 (63:7, 6:3, 10:4) | details | 25.01.2023 |
Spain: Tenerife - Doubles - Main |
| Quarter-finals | Cornea V. V./Martos Gornes S. | O'Mara J./Walkow S. | 2:1 (7:65, 1:6, 10:7) | details | 19.01.2023 |
| 1/8-finals | Jebens H./Molchanov D. | O'Mara J./Walkow S. | 0:2 (63:7, 2:6) | details | 18.01.2023 |
Australia: United Cup - Mixed Doubles - Main |
| | Bouzas Maneiro J./Vega Hernandez D. | Dart H./O'Mara J. | 1:2 (6:3, 2:6, 5:10) | details | 01.01.2023 |
| | Stosur S./Peers J. | Dart H./O'Mara J. | 2:0 (7:64, 6:4) | details | 30.12.2022 |
United Kingdom: Battle of the Brits - Doubles - Main |
| | Murray J./O'Mara J. | Jubb P./Skupski N. | 1:2 (4:6, 7:5, 6:10) | details | 22.12.2022 |
| | Murray J./O'Mara J. | Salisbury J./Skupski N. | CAN. | details | 22.12.2022 |
Slovakia: Bratislava 2 - Doubles - Main |
| 1/8-finals | Skugor F./Zelenay I. | Cacic N./O'Mara J. | 2:0 (6:3, 6:2) | details | 09.11.2022 |
Italy: Bergamo - Doubles - Main |
| Quarter-finals | Squire H./Struff J-L. | O'Mara J./Oswald P. | 2:0 (6:1, 6:4) | details | 03.11.2022 |
| 1/8-finals | Raja P./Sharan D. | O'Mara J./Oswald P. | 0:2 (64:7, 1:6) | details | 02.11.2022 |
France: Brest - Doubles - Main |
| Quarter-finals | O'Mara J./Verbeek S. | Bergevi F./Tsitsipas Pe. | 0:2 (3:6, 4:6) | details | 27.10.2022 |
| 1/8-finals | O'Mara J./Verbeek S. | Arends S./Skugor F. | 2:0 (6:4, 6:2) | details | 25.10.2022 |
Belgium: Antwerp - Doubles - Main |
| Quarter-finals | Evans D./O'Mara J. | Bopanna R./Middelkoop M. | 0:2 (4:6, 1:6) | details | 20.10.2022 |
| 1/8-finals | Evans D./O'Mara J. | Sabanov I./Sabanov M. | 2:0 (6:3, 6:2) | details | 18.10.2022 |
| 1/8-finals | Evans D./O'Mara J. | Giron M./Korda S. | CAN. | details | 18.10.2022 |
Germany: Ismaning - Doubles - Main |
| 1/8-finals | O'Mara J./Ramanathan R. | Liutarevich I./Manafov V. | 1:2 (67:7, 7:65, 8:10) | details | 12.10.2022 |
Italy: Parma 2 - Doubles - Main |
| Semi-finals | Martinez L. D./Zelenay I. | O'Mara J./Oswald P. | 2:1 (5:7, 6:3, 10:8) | details | 07.10.2022 |
| Quarter-finals | Taylor J./Walkin B. | O'Mara J./Oswald P. | 0:2 (3:6, 4:6) | details | 06.10.2022 |
| 1/8-finals | Arnaboldi F./Ferrari G. | O'Mara J./Oswald P. | 0:2 (2:6, 3:6) | details | 05.10.2022 |
France: Orleans - Doubles - Main |
| Semi-finals | Mahut N./Roger-Vasselin E. | Johnson L./O'Mara J. | 2:0 (6:3, 6:3) | details | 01.10.2022 |
| Quarter-finals | Johnson L./O'Mara J. | Bellier A./Masur D. | 2:1 (4:6, 6:4, 10:6) | details | 29.09.2022 |
| 1/8-finals | Johnson L./O'Mara J. | Dzumhur D./Ramanathan R. | 2:1 (4:6, 6:0, 11:9) | details | 27.09.2022 |