He is on the books of Celta Vigo B and wears shirt number 19. At international level, he features for Spain U18. His main role on the pitch is Midfield. His estimated market valuation currently stands at 800K €.

His latest transfer saw him join Celta Vigo B from Celta de Vigo U19 via on 2024-07-01.

Over 23 appearances in the Primera Federación 2025-2026, oscar marcos contributed 5 goals and 1 assists, completed 0 key passes from 0 total passes, and posted a passing accuracy of -.