Dominik Koepfer Dominik Koepfer (born 29 April 1994), also spelled Köpfer, is a German professional tennis player. He achieved a career-high ATP singles ranking of world No. 49 on 4 March 2024, and a doubles ranking of No. 69 on 24 June 2024. He played college ...

was the defending champion but lost in the final to

Liam Draxl Liam Draxl (born December 5, 2001) is a Canadian tennis player. He has a career-high ATP singles ranking of world No. 142, achieved on 5 May 2025 and a doubles ranking of No. 112, achieved on 3 February 2025. He is currently the No. 4 Canadian p ...

. Draxl won the title after defeating Koepfer 6–4, 6–3 in the final.

Seeds

Draw

Finals

Top half

Bottom half

References

External links

Main drawQualifying draw
{{DEFAULTSORT:2023 Calgary National Bank Challenger - 1 Calgary National Bank Challenger - 1 2023 Men's singles