| Jinan challenger |
Round |
Result |
H |
A |
| 08.10. |
|
Draxl L. - O'Connell C. |
1R |
4-6, 1-1 |
2.22 |
1.61 |
| Shanghai |
Round |
Result |
H |
A |
| 04.10. |
|
Shapovalov D. - O'Connell C. |
2R |
6-3, 6-2 |
1.41 |
2.91 |
| 02.10. |
|
O'Connell C. - Dzumhur D. |
1R |
6-2, 6-4 |
1.62 |
2.27 |
| Beijing |
Round |
Result |
H |
A |
| 23.09. |
|
Van De Zandschulp B. - O'Connell C. |
Q-R16 |
6-2, 6-2 |
1.69 |
2.10 |
| Chengdu |
Round |
Result |
H |
A |
| 21.09. |
|
Tabilo A. - O'Connell C. |
QF |
4-6, 7-5, 6-2 |
1.50 |
2.58 |
| 19.09. |
|
O'Connell C. - Zhou Y. |
R16 |
6-2, 6-4 |
1.49 |
2.58 |
| 17.09. |
|
O'Connell C. - Halys Q. |
1R |
63-7, 6-3, 6-4 |
1.90 |
1.86 |
| Guangzhou 2 challenger |
Round |
Result |
H |
A |
| 13.09. |
|
Tabilo A. - O'Connell C. |
SF |
2-1 |
1.78 |
1.95 |
| 12.09. |
|
O'Connell C. - Sharipov M. |
QF |
6-4, 6-4 |
1.34 |
3.09 |
| 11.09. |
|
O'Connell C. - Eubanks C. |
R16 |
3-6, 6-3, 6-4 |
1.44 |
2.65 |
| 09.09. |
|
O'Connell C. - Te R. |
1R |
6-4, 6-4 |
1.08 |
7.02 |
| US Open |
Round |
Result |
H |
A |
| 26.08. |
|
De Minaur A. - O'Connell C. |
1R |
6-3, 6-4, 6-4 |
1.04 |
11.75 |
| Winston Salem |
Round |
Result |
H |
A |
| 19.08. |
|
Bautista-Agut R. - O'Connell C. |
2R |
6-4, 0-0 |
1.57 |
2.36 |
| 18.08. |
|
O'Connell C. - Safiullin R. |
1R |
6-3, 6-3 |
2.53 |
1.51 |
| Toronto |
Round |
Result |
H |
A |
| 02.08. |
|
De Minaur A. - O'Connell C. |
3R |
|
|
|
| 31.07. |
|
O'Connell C. - Tsitsipas S. |
2R |
6-4, 4-6, 6-2 |
2.95 |
1.39 |
| 28.07. |
|
O'Connell C. - Tseng C. |
1R |
6-1, 6-2 |
1.63 |
2.26 |
| Washington |
Round |
Result |
H |
A |
| 21.07. |
|
Quinn E. - O'Connell C. |
1R |
6-3, 6-2 |
1.53 |
2.48 |
| Wimbledon |
Round |
Result |
H |
A |
| 30.06. |
|
Mannarino A. - O'Connell C. |
1R |
6-2, 6-4, 6-3 |
1.40 |
2.93 |
| Eastbourne |
Round |
Result |
H |
A |
| 21.06. |
|
Monday J. - O'Connell C. |
Q-R16 |
6-3, 2-6, 6-4 |
2.42 |
1.54 |
| Queen's Club |
Round |
Result |
H |
A |
| 16.06. |
|
Rune H. - O'Connell C. |
1R |
6-3, 6-4 |
1.19 |
5.48 |
| 15.06. |
|
Bolt A. - O'Connell C. |
Q-QF |
3-6, 7-64, 6-3 |
1.79 |
2.00 |
| 14.06. |
|
O'Connell C. - Duckworth J. |
Q-R16 |
7-64, 6-0 |
2.30 |
1.58 |
| Hertogenbosch |
Round |
Result |
H |
A |
| 11.06. |
|
Mannarino A. - O'Connell C. |
1R |
6-1, 6-3 |
1.67 |
2.19 |
| Birmingham challenger |
Round |
Result |
H |
A |
| 03.06. |
|
Moreno De Alboran N. - O'Connell C. |
1R |
6-4, 6-3 |
2.90 |
1.38 |
| French Open |
Round |
Result |
H |
A |
| 26.05. |
|
Humbert U. - O'Connell C. |
1R |
7-5, 6-3, 7-63 |
1.50 |
2.58 |
| Hamburg |
Round |
Result |
H |
A |
| 17.05. |
|
Ymer E. - O'Connell C. |
Q-R16 |
6-2, 3-6, 6-4 |
3.27 |
1.33 |
| Rome |
Round |
Result |
H |
A |
| 07.05. |
|
Norrie C. - O'Connell C. |
1R |
6-3, 6-2 |
1.57 |
2.38 |
| Madrid |
Round |
Result |
H |
A |
| 25.04. |
|
Fritz T. - O'Connell C. |
2R |
6-1, 6-4 |
1.26 |
3.83 |
| 23.04. |
|
O'Connell C. - Ugo Carabelli C. |
1R |
6-3, 6-4 |
2.27 |
1.63 |
| Munich |
Round |
Result |
H |
A |
| 15.04. |
|
Darderi L. - O'Connell C. |
1R |
7-63, 7-63 |
1.65 |
2.25 |
| 12.04. |
|
Tseng C. - O'Connell C. |
Q-R16 |
6-3, 6-2 |
2.41 |
1.54 |
| Bucharest |
Round |
Result |
H |
A |
| 04.04. |
|
Fucsovics M. - O'Connell C. |
QF |
6-0, 6-4 |
1.51 |
2.55 |
| 03.04. |
|
O'Connell C. - Jarry N. |
R16 |
6-2, 5-7, 7-65 |
1.80 |
1.99 |
| 01.04. |
|
O'Connell C. - Lajovic D. |
1R |
6-4, 6-3 |
2.40 |
1.56 |
| Miami |
Round |
Result |
H |
A |
| 19.03. |
|
Carballes Baena R. - O'Connell C. |
1R |
6-3, 3-6, 7-65 |
2.50 |
1.53 |
| 18.03. |
|
O'Connell C. - Trungelliti M. |
Q-2R |
6-2, 6-3 |
1.12 |
5.99 |
| 17.03. |
|
O'Connell C. - Draxl L. |
Q-1R |
7-5, 6-0 |
1.39 |
2.85 |
| Indian Wells |
Round |
Result |
H |
A |
| 07.03. |
|
Berrettini M. - O'Connell C. |
2R |
6-2, 7-62 |
1.21 |
4.36 |
| 05.03. |
|
O'Connell C. - Carballes Baena R. |
1R |
6-3, 0-6, 6-1 |
1.75 |
2.07 |
| Dubai |
Round |
Result |
H |
A |
| 26.02. |
|
Berrettini M. - O'Connell C. |
R16 |
7-62, 6-2 |
1.28 |
3.70 |
| 25.02. |
|
O'Connell C. - Dimitrov G. |
1R |
6-0 |
2.99 |
1.38 |
| 23.02. |
|
O'Connell C. - Van De Zandschulp B. |
Q-QF |
7-65, 6-4 |
2.55 |
1.49 |
| 22.02. |
|
O'Connell C. - Al Janahi A. |
Q-R16 |
6-2, 6-0 |
1.01 |
12.25 |
| Doha |
Round |
Result |
H |
A |
| 19.02. |
|
Draper J. - O'Connell C. |
R16 |
6-2, 6-1 |
1.20 |
4.47 |
| 17.02. |
|
O'Connell C. - Habib H. |
1R |
7-67, 7-63 |
1.32 |
3.38 |
| 16.02. |
|
O'Connell C. - Kotov P. |
Q-QF |
6-4, 6-2 |
1.40 |
2.86 |
| 15.02. |
|
O'Connell C. - Watanuki Y. |
Q-R16 |
63-7, 7-64, 6-3 |
1.56 |
2.36 |
| Australian Open |
Round |
Result |
H |
A |
| 13.01. |
|
Paul T. - O'Connell C. |
1R |
6-2, 3-6, 6-1, 65-7, 7-5 |
1.17 |
5.11 |
| Adelaide |
Round |
Result |
H |
A |
| 08.01. |
|
Kecmanovic M. - O'Connell C. |
R16 |
7-61, 6-2 |
1.84 |
1.95 |
| 06.01. |
|
O'Connell C. - Rinderknech A. |
1R |
7-5, 7-65 |
1.61 |
2.31 |
| Brisbane |
Round |
Result |
H |
A |
| 30.12. |
|
Michelsen A. - O'Connell C. |
1R |
6-4, 4-6, 7-610 |
1.44 |
2.78 |