Daniel Altmaier vs Borna Coric will take place in the quarter-finals of the 2023 Madrid Open on May 3.
Brandon Nakashima and Daniel Altmaier will face each other in the first round of the 2023 Mexican Open on Wednesday, March 1.
Following the Knoxville Challenger final on November 15, 2021, Altmaier entered the top 100 as World No. 98. At the 2021 Puerto Vallarta Open
Tuesday's first round of the 2022 US Open will pit the 13th-ranked Jannik Sinner against the 93rd-ranked Daniel Altmaier.
Corentin Moutet and Daniel Altmaier will take on each other on Tuesday July 25 in the first round of the 2022 Croatia open.
On Tuesday, Francisco Cerundolo of Argentina will face Daniel Altmaier of Germany in the first round of 2022 ATP Hamburg open.
The German third seed is vying for his first major title at the Australian Open 2022.