11 Roberto Bautista Agut in four sets in order to advance to a Grand Slam third round for the first time in his career.

[4] He won his sixth Challenger title at the 2021 Open d'Orléans defeating Dennis Novak.

1 Swiss player ahead of Roger Federer before being overtaken on 29 August 2022 by Marc-Andrea Huesler.

[5][6] He reached another final at the Challenger in Roanne losing to Hugo Gaston and climbed 27 positions up to No.

In September 2013, Switzerland played against Ecuador in Neuchâtel for the Davis Cup World Group play-off.

Laaksonen was called to play with Stanislas Wawrinka, Marco Chiudinelli, and Michael Lammer.

Someone in his age, with his ranking and who has been supported by Swiss Tennis for many years and thinks he can not fully commit to a practice session and even complains about the coach, cannot be part of the team".

Laaksonen later was fined and received a formal warning from the Swiss Tennis Federation.

However, Laaksonen did not play in any of the rubbers as the top players Roger Federer and Stan Wawrinka were in both the singles matches and the doubles.

In 2015, after talks with the team and the captain, Laaksonen was called upon to play in the first round against Belgium in Liège.

For the 2017 Davis Cup World Group, Laaksonen played both singles and doubles in Switzerland's tie with the United States.

In the World Group play-offs against Belarus, despite losing his first singles rubber, Laaksonen defeated Dzmitry Zhyrmont with Switzerland behind 2−1 in the tie.

Laaksonen opened Switzerland's 2018 Davis Cup World Group tie against Kazakhstan, losing in four sets.

In 2020, away against Peru in Lima, Laaksonen won his first match but lost the decisive rubber against the top Peruvian player Juan Pablo Varillas, resulting in Switzerland's relegation to Group II, the third level of world's tennis.