Andrej Martin

He was a lucky loser at the French Open and defeated Daniel Muñoz de la Nava in the first round of the main draw and 29th seed Lucas Pouille in the second, before losing to 8th-seed Milos Raonic in the third round.

In July 2016, Martin reached first ATP final, in Umag, defeated Martin Kližan, João Sousa, Carlos Berlocq and Sergiy Stakhovsky en route. In the final he lost to Italian No. 1 Fabio Fognini.

Later in the year, Martin participated in the 2016 Summer Olympics. After comfortably defeating Denis Kudla in the first round, Martin got a walkover into the 3rd round when opponent Philipp Kohlschreiber withdrew with an injury. However, Martin was then beaten by the 4th-seeded Kei Nishikori, 2–6, 2–6.

He achieved a career-high ATP singles ranking of world No. 98 in July 2016 following his runs to the third round of the French Open and the final in Umag.

He reached a career-high ranking of No. 93 on 10 February 2020 after a semifinal showing at the 2020 Córdoba Open defeating Corentin Moutet in the quarterfinals before losing to eventual champion Cristian Garín.

He entered directly into the main draw of the US Open but lost in the first round to 21st seed Alex de Minaur.

He made his main draw debut at the 2021 Australian Open where he lost to Thiago Monteiro.

At the 2021 Belgrade Open after qualifying for the main draw, he defeated Christopher O'Connell, third seed Nikoloz Basilashvili, fifth seed Dušan Lajović but lost to top seed and World No. 1 and eventual champion Novak Djokovic in the semifinals.

Martin reached his maiden doubles final at the 2022 Córdoba Open partnering Sam Weissborn.

In 2023, he was banned from professional tennis for 14 months till 5 June 2024 by the International Tennis Integrity Agency after testing positive for Ostarine. Martin explained that he had mistakenly drunk from a floorball teammate's water bottle; the teammate admitted to adding the prohibited drug to his own bottle.