He is on the books of Trelleborgs FF and wears shirt number 8. His main role on the pitch is Midfield. His estimated market valuation currently stands at 50K €.

His latest transfer saw him join Trelleborgs FF from Tvaakers IF via on 2025-02-01.

Over 18 appearances in the Sweden Division 1 2024, Oskar Ruuska contributed 5 goals and 0 assists, completed 0 key passes from 0 total passes, and posted a passing accuracy of -.