Von Deichmann has won 15 singles and four doubles titles on the ITF Women's Circuit.

At the 2018 US Open, von Deichmann made tennis history for her country by becoming the first Liechtensteiner to reach the main draw of singles of a Grand Slam, after winning three matches in the qualifying tournament.

[2] Playing for Liechtenstein Fed Cup team, von Deichmann has a win–loss record of 23–14 as of March 2024.

She paired with Yvonne Meusburger for her WTA Tour debut at the 2014 Nürnberger Versicherungscup in doubles, losing in the first round.

[3] Appearing as a lucky loser, Von Deichmann won her first completed WTA Tour match when she defeated eight seed Anna Karolina Schmiedlova in straight sets in the first round of the 2024 Prague Open, having previously triumphed in two matches in Lugano 2018 and Seoul 2023 when her opponents retired injured.