Stian Klaassen is a professional tennis player from Netherlands, born 19 April 2003. The Dutchman competes on the ATP Tour.
This page tracks Stian Klaassen's upcoming schedule, latest results, recent form and surface record, with each match linking through to a detailed head-to-head and pre-match analysis. Scores update live as matches are played.
Rankings
Frequently asked questions
When was Stian Klaassen born?
Stian Klaassen was born on 19 April 2003 (23 years old).
Where is Stian Klaassen from?
Stian Klaassen is from Netherlands.