Christopher O'Connell leads 2 to 1 over 3 singles meetings since 2023. Last meeting on 06/11/2024 at Belgrade Open - Belgrade.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 06/11/2024 | Belgrade Open - Belgrade | Round 2 | indoor hard | O'Connell | 3-6 1-6 |
| 12/08/2023 | Western & Southern Open - Cincinnati | Qualifying 1 | hard | Altmaier | 3-6 7-6(5) 6-4 |
| 12/06/2023 | Boss Open - Stuttgart | Round 1 | grass | O'Connell | 6-3 6-1 |
| indoor hard | Altmaier 0 - 1 O'Connell |
| hard | Altmaier 1 - 0 O'Connell |
| grass | Altmaier 0 - 1 O'Connell |
| 2024 | Altmaier 0 - 1 O'Connell |
| 2023 | Altmaier 1 - 1 O'Connell |
193 wins, 173 losses since 2021 (52.7%).
Last matches: D D V D V
180 wins, 145 losses since 2021 (55.4%).
Last matches: D V V D V
Christopher O'Connell leads 2 to 1 over 3 singles meetings since 2023.
On 06/11/2024, at Belgrade Open - Belgrade (Round 2): Christopher O'Connell won 3-6 1-6.