Sam Weissborn

Tristan-Samuel Weissborn (born 24 October 1991) is an Austrian professional tennis player who specializes in doubles.

Weissborn has been ranked by the Association of Tennis Professionals (ATP) as high as world No. 50 in doubles, which he achieved in July 2023. He also reached his career-high singles ranking of world No. 503, attained in July 2013. Since turning professional, Weissborn has won 20 doubles titles on the ATP Challenger Tour as well as one singles and 23 doubles titles on the ITF Men's World Tennis Tour.

2015-2016: ATP debut
Weissborn won his first ATP Challenger title at the 2015 Sparkassen ATP Challenger, partnering Maximilian Neuchrist.

Weissborn made his ATP World Tour doubles debut at the 2016 Swiss Open Gstaad, where he reached with partner Sander Arends the semifinals.

2022: Maiden ATP final
He reached his maiden ATP doubles final at the 2022 Córdoba Open with Andrej Martin.

2023: Masters debut and first final, Top 50
On his debut at an ATP Masters 1000 tournament, he reached his first semifinal at the 2023 Monte-Carlo Masters with partner Romain Arneodo after upsetting the second-seeded defending champions Rajeev Ram and Joe Salisbury as well as sixth-seeded Lloyd Glasspool and Harri Heliövaara. They reached their first Masters final defeating German duo Kevin Krawietz and Tim Pütz. As a result he moved into the top 60 in the doubles rankings at world No. 59 on 24 April 2023.